Time hours. 1. Above is a velocity time graph of a moving car. Answer the following questions using the graph. a. At what time was the car stopped?
|
|
|
- Edgar Fields
- 7 years ago
- Views:
Transcription
1 Time hours 1. Above is a velocity time graph of a moving car. Answer the following questions using the graph. a. At what time was the car stopped? b. At what time did the car have the greatest velocity? c. What was the greatest velocity? d. At what time(s) was the car accelerating? e. How fast was the car going at 1.0h? f. What is the acceleration at 0.9 h?
2 Time hours a. At what time was the car stopped?
3 Time hours hours a. At what time was the car stopped? We look to the graph to where velocity = 0 km/h. This is indicated by the green line. This velocity occurs between time hours.
4 Time hours b. At what time did the car have the greatest velocity?
5 Time hours hours b. At what time did the car have the greatest velocity? We look to the graph to find the highest vertical point. This range is indicated by the blue line. In this case the highest point occurs in the range of hours.
6 Time hours c. What was the greatest velocity?
7 Time hours 60.0 km/h c. What was the greatest velocity? We use the vertical axis, which measures velocity to find that the greatest velocity was 60.0 km/hr.
8 Time hours d. At what time(s) was the car accelerating?
9 Time hours 0 0.2h, h, h d. At what time(s) was the car accelerating? Acceleration means change in velocity, so we look to the graph to find where the slope does not equal zero. Remember, in physics class, acceleration can mean both positive acceleration, or negative acceleration (deceleration), so we also must count the interval of hours.
10 Time hours e. How fast was the car going at 1.0h?
11 Time hours 40.0 km/h e. How fast was the car going at 1.0h? We look at the horizontal axis to find to find time = 1.0 hour. We then move up the graph find the velocity at 1.0 hour. Using the vertical axis, we see that at time 1 hour, the velocity is 40.0 km/h.
12 Time hours f. What is the acceleration at 0.9 h?
13 Time hours f. What is the acceleration at 0.9 h? To find the acceleration, we need to calculate the slope of the line at time = 0.9h. The slope tell us how the velocity is changing. Change in velocity = ACCELERATION!
14 Time hours f. What is the acceleration at 0.9 h? Since the slope is constant from h (as shown by the green line), we use this as our range for time. During this interval, velocity changes from km/h. Then we just use the equation for slope, which in this case is the equation for finding acceleration: Slope = (y 2 y 1 )/(x 2 x 1 ). And so acceleration = (v 2 v 1 )/(t 2 t 1 )
15 Time hours 200 km/h 2 f. What is the acceleration at 0.9 h? Now we just plug our numbers into our equation: A = (v 2 v 1 )/(t 2 t 1 ) A = (v 2 v 1 )/(t 2 t 1 ) = (40.0 km/h 0 km/h)/(1.0 h 0.8 h) = (40.0 km/h)/(0.2 h) = 200 km/h 2
16 1. Above is a velocity time graph of a moving car. Answer the following questions using the graph hours a. Time hours At what time was the car stopped? hours b. At what time did the car have the greatest velocity? 60 km/h c. What was the greatest velocity? 0 0.2h, h, h d. At what time(s) was the car accelerating? 40 km/h e. How fast was the car going at 1.0h? 200 km/h 2 f. What is the acceleration at 0.9 hr?
17 2. The following table shows the positions of two cars at the times indicated. Graph the data for each car on one set of axis and compute the velocity of each car. TIME (min) Position CAR A (km) CAR B (km)
18 2. The following table shows the positions of two cars at the times indicated. Graph the data for each car on one set of axis and compute the velocity of each car. TIME (min) Position CAR A (km) CAR B (km)
19 2. The following table shows the positions of two cars at the times indicated. Graph the data for each car on one set of axis and compute the velocity of each car. TIME (min) Position CAR A (km) CAR B (km)
20 2. The following table shows the positions of two cars at the times indicated. Graph the data for each car on one set of axis and compute the velocity of each car. TIME (min) Position CAR A (km) CAR B (km)
21 2. The following table shows the positions of two cars at the times indicated. Graph the data for each car on one set of axis and compute the velocity of each car. TIME (min) Position CAR A (km) CAR B (km)
22 2. The following table shows the positions of two cars at the times indicated. Graph the data for each car on one set of axis and compute the velocity of each car. Velocity for each car will just be equal to the slope of the line for position vs. time for each car.
23 2. The following table shows the positions of two cars at the times indicated. Graph the data for each car on one set of axis and compute the velocity of each car. CAR A: (7.0 km 1 km) V = (7.0 min 1 min) (7.0, 7.0) (7.0, 7.0) V = 6.0 km 6.0 min V = 1.0 km/min (1.0, 1.0) (1.0, 1.0)
24 2. The following table shows the positions of two cars at the times indicated. Graph the data for each car on one set of axis and compute the velocity of each car. CAR A: (7.0 km 1 km) V = (7.0 min 1 min) (1.0, 2.75) (1.0, 2.75) (1.0, 2.75) (1.0, 1.0) (5.0, 5.75) (5.0, 5.75) (7.0, 7.0) V = V = 1.0 km/min V = V = 6.0 km 6.0 min CAR B: (5.75 km 2.75 km) (5.0 min 1 min) 3.0 km 4.0 min V = 0.75 km/min
25 Part II: accelerated motion 3. Draw a velocity time graph for a ball that has been thrown straight up into the air and returns to its original position. (neglect air friction)
26 Part II: accelerated motion 3. Draw a velocity time graph for a ball that has been thrown straight up into the air and returns to its original position. (neglect air friction) Before we create our graph, let's look at how gravity affects the motion of the ball. Gravity = 9.8 m/s 2 down, but we'll approximate gravity as: g = 10 m/s 2 down. Let's also say that the ball has an initial velocity of 30 m / s up.
27 Part II: accelerated motion 3. Draw a velocity time graph for a ball that has been thrown straight up into the air and returns to its original position. (neglect air friction) g = 10 m/s 2 v i = 30 m / s <= down <= up
28 Part II: accelerated motion 3. Draw a velocity time graph for a ball that has been thrown straight up into the air and returns to its original position. (neglect air friction) g = 10 m/s 2 v i = 30 m / s <= down <= up t = 0s v i = 30 m / s
29 Part II: accelerated motion 3. Draw a velocity time graph for a ball that has been thrown straight up into the air and returns to its original position. (neglect air friction) g = 10 m/s 2 v i = 30 m / s <= down <= up t = 1s v = 20 m / s t = 0s v i = 30 m / s
30 Part II: accelerated motion 3. Draw a velocity time graph for a ball that has been thrown straight up into the air and returns to its original position. (neglect air friction) t = 2s v = 10 m / s g = 10 m/s 2 v i = 30 m / s <= down <= up t = 1s v = 20 m / s t = 0s v i = 30 m / s
31 Part II: accelerated motion 3. Draw a velocity time graph for a ball that has been thrown straight up into the air and returns to its original position. (neglect air friction) t = 3s v = 0 m / s t = 2s v = 10 m / s g = 10 m/s 2 <= down v i = 30 m / s <= up t = 1s t = 0s v = 20 m / s v i = 30 m / s Let's start our graph, then we will look at the ball's trip down.
32 Part II: accelerated motion 3. Draw a velocity time graph for a ball that has been thrown straight up into the air and returns to its original position. (neglect air friction) Velocity (m/s) 0 Time (s)
33 Part II: accelerated motion 3. Draw a velocity time graph for a ball that has been thrown straight up into the air and returns to its original position. (neglect air friction) We know this ball starts with some positive initial velocity (up). Velocity (m/s) 0 Time (s)
34 Part II: accelerated motion 3. Draw a velocity time graph for a ball that has been thrown straight up into the air and returns to its original position. (neglect air friction) Velocity (m/s) 0 We also know that gravity will cause the ball to slow down as is moves through the air. Time (s)
35 Part II: accelerated motion 3. Draw a velocity time graph for a ball that has been thrown straight up into the air and returns to its original position. (neglect air friction) Velocity (m/s) 0 Gravity causes the ball to accelerate Gravity is constant Slope is constant. Time (s)
36 Part II: accelerated motion 3. Draw a velocity time graph for a ball that has been thrown straight up into the air and returns to its original position. (neglect air friction) t = 3s v i = 0 m / s g = 10 m/s 2 <= down v i = 0 m / s Now let's look at the ball's trip down.
37 Part II: accelerated motion 3. Draw a velocity time graph for a ball that has been thrown straight up into the air and returns to its original position. (neglect air friction) t = 3s v i = 0 m / s t = 4s v = 10 m / s g = 10 m/s 2 <= down v i = 0 m / s
38 Part II: accelerated motion 3. Draw a velocity time graph for a ball that has been thrown straight up into the air and returns to its original position. (neglect air friction) t = 3s t = 4s v i = 0 m / s v = 10 m / s g = 10 m/s 2 <= down v i = 0 m / s t = 5s v = 20 m / s
39 Part II: accelerated motion 3. Draw a velocity time graph for a ball that has been thrown straight up into the air and returns to its original position. (neglect air friction) t = 3s v i = 0 m / s t = 4s v = 10 m / s g = 10 m/s 2 <= down v i = 0 m / s t = 5s v = 20 m / s Now we are ready to finish our graph. t = 6s v = 30 m / s
40 Part II: accelerated motion 3. Draw a velocity time graph for a ball that has been thrown straight up into the air and returns to its original position. (neglect air friction) Velocity (m/s) 0 The lower quadrant of the graph shows negative velocity (down in our case). Time (s)
41 Part II: accelerated motion 3. Draw a velocity time graph for a ball that has been thrown straight up into the air and returns to its original position. (neglect air friction) Velocity (m/s) 0 Time (s)
42 Part II: accelerated motion 3. Draw a velocity time graph for a ball that has been thrown straight up into the air and returns to its original position. (neglect air friction) Velocity (m/s) 0 Time (s) Gravity is still constant, so our slope is still constant.
43 Part II: accelerated motion 3. Draw a velocity time graph for a ball that has been thrown straight up into the air and returns to its original position. (neglect air friction) Velocity (m/s) 0 Time (s)
44 4. A police car is stopped at a red light. As the light turns green, a diesel truck hurtles past in the next lane traveling at a constant speed of 28.0 m/s. If the police car, sirens blaring and lights flashing, accelerates at 4.0 m/s 2, how many seconds will it take it to catch the truck? Hint: On the same set of axis, draw velocity time graphs for the car and the truck.
45 4) A diesel truck hurtles past in the next lane traveling at a constant speed of 28.0 m/s.
46 4) A diesel truck hurtles past in the next lane traveling at a constant speed of 28.0 m/s. Velocity (m/s) Time (s)
47 4) A diesel truck hurtles past in the next lane traveling at a constant speed of 28.0 m/s Velocity (m/s) Time (s)
48 4) A diesel truck hurtles past in the next lane traveling at a constant speed of 28.0 m/s Velocity (m/s) Time (s)
49 4) A police car is stopped at a red light. If the police car...accelerates at 4.0 m/s 2, how many seconds will it take it to catch the truck? Velocity (m/s) Time (s)
50 4) A police car is stopped at a red light. If the police car...accelerates at 4.0 m/s 2, how many seconds will it take it to catch the truck? 60.0 We want the time when: 50.0 d truck = d cop Velocity (m/s) Time (s)
51 4) A police car is stopped at a red light. If the police car...accelerates at 4.0 m/s 2, how many seconds will it take it to catch the truck? 60.0 We want the time when: 50.0 d truck = d cop Velocity (m/s) v truck *t = 1 / 2 a cop t 2 v truck = 1 / 2 a cop t 2v truck /a cop = t 10.0 t = 2(28 m / s )/(4.0 m / s 2) t = 14s Time (s)
52 4) A police car is stopped at a red light. If the police car...accelerates at 4.0 m/s 2, how many seconds will it take it to catch the truck? 60.0 Speed of the Car: 50.0 Velocity (m/s) Time (s)
53 4) A police car is stopped at a red light. If the police car...accelerates at 4.0 m/s 2, how many seconds will it take it to catch the truck? Speed of the Car: v f = v i + at Velocity (m/s) v f = (4.0 m/s 2 )(14s) v f = 56 m/s Time (s)
54 4) A police car is stopped at a red light. If the police car...accelerates at 4.0 m/s 2, how many seconds will it take it to catch the truck? Speed of the Car: v f = v i + at Velocity (m/s) v f = (4.0 m/s 2 )(14s) v f = 56 m/s Time (s)
55 4) A police car is stopped at a red light. If the police car...accelerates at 4.0 m/s 2, how many seconds will it take it to catch the truck? 60.0 v f Also Notice: Velocity (m/s) v avg v avg = v f + v i = v f v avg = 56m/s v avg = 28 m / s 10.0 v f = 2v avg = 2*28 m / s v i Time (s) v f = 56 m / s
56 4) A police car is stopped at a red light. If the police car...accelerates at 4.0 m/s 2, how many seconds will it take it to catch the truck? Velocity (m/s) v avg v f Let's look at this in terms of distance: d truck = v*t d truck = (28 m / s )(14s) d truck = 392 m d police = 1 / 2 at d police = 1 / 2 (4.0 m/s 2 )(14s) 2 v i Time (s) d police = 392 m
57 4) A police car is stopped at a red light. If the police car...accelerates at 4.0 m/s 2, how many seconds will it take it to catch the truck? Velocity (m/s) v avg v f Let's look at this in terms of distance: d truck = v*t d truck = (28 m / s )(14s) d truck = 392 m d police = 1 / 2 at d police = 1 / 2 (4.0 m/s 2 )(14s) 2 v i Time (s) d police = 392 m
58 4) A police car is stopped at a red light. If the police car...accelerates at 4.0 m/s 2, how many seconds will it take it to catch the truck? Velocity (m/s) 60.0 Let's look at this in terms of distance: v avg v f d truck = v*t d truck = (28 m / s )(14s) d truck = 392 m d police = 1 / 2 at d police = 1 / 2 (4.0 m/s 2 )(14s) 2 v i Time (s) d police = 392 m
59 4) A police car is stopped at a red light. If the police car...accelerates at 4.0 m/s 2, how many seconds will it take it to catch the truck? Velocity (m/s) 60.0 Let's look at this in terms of distance: v i v avg d police = v avg *t d police = (28 m / s )(14s) d police = 392 m Time (s) v f OR OR d truck = v*t d truck = (28 m / s )(14s) d truck = 392 m d police = 1 / 2 at 2 d police = 1 / 2 (4.0 m/s 2 )(14s) 2 d police = 392 m
60 This is an example of a 'Step' Graph. What do the vertical lines represent, and why do we use step graphs? Velocity (km/h) Time (hr)
Physics Kinematics Model
Physics Kinematics Model I. Overview Active Physics introduces the concept of average velocity and average acceleration. This unit supplements Active Physics by addressing the concept of instantaneous
Physics: Principles and Applications, 6e Giancoli Chapter 2 Describing Motion: Kinematics in One Dimension
Physics: Principles and Applications, 6e Giancoli Chapter 2 Describing Motion: Kinematics in One Dimension Conceptual Questions 1) Suppose that an object travels from one point in space to another. Make
Graphing Motion. Every Picture Tells A Story
Graphing Motion Every Picture Tells A Story Read and interpret motion graphs Construct and draw motion graphs Determine speed, velocity and accleration from motion graphs If you make a graph by hand it
1.3.1 Position, Distance and Displacement
In the previous section, you have come across many examples of motion. You have learnt that to describe the motion of an object we must know its position at different points of time. The position of an
Motion Graphs. It is said that a picture is worth a thousand words. The same can be said for a graph.
Motion Graphs It is said that a picture is worth a thousand words. The same can be said for a graph. Once you learn to read the graphs of the motion of objects, you can tell at a glance if the object in
In order to describe motion you need to describe the following properties.
Chapter 2 One Dimensional Kinematics How would you describe the following motion? Ex: random 1-D path speeding up and slowing down In order to describe motion you need to describe the following properties.
8. As a cart travels around a horizontal circular track, the cart must undergo a change in (1) velocity (3) speed (2) inertia (4) weight
1. What is the average speed of an object that travels 6.00 meters north in 2.00 seconds and then travels 3.00 meters east in 1.00 second? 9.00 m/s 3.00 m/s 0.333 m/s 4.24 m/s 2. What is the distance traveled
Scalar versus Vector Quantities. Speed. Speed: Example Two. Scalar Quantities. Average Speed = distance (in meters) time (in seconds) v =
Scalar versus Vector Quantities Scalar Quantities Magnitude (size) 55 mph Speed Average Speed = distance (in meters) time (in seconds) Vector Quantities Magnitude (size) Direction 55 mph, North v = Dx
SPEED, VELOCITY, AND ACCELERATION
reflect Look at the picture of people running across a field. What words come to mind? Maybe you think about the word speed to describe how fast the people are running. You might think of the word acceleration
Speed, velocity and acceleration
Chapter Speed, velocity and acceleration Figure.1 What determines the maximum height that a pole-vaulter can reach? 1 In this chapter we look at moving bodies, how their speeds can be measured and how
Problem 12.33. s s o v o t 1 2 a t2. Ball B: s o 0, v o 19 m s, a 9.81 m s 2. Apply eqn. 12-5: When the balls pass each other: s A s B. t 2.
ENPH 131 Assignment # Solutions Tutorial Problem (Rocket Height) A rocket, initially at rest on the ground, accelerates straight upward with a constant acceleration of 3. m s. The rocket accelerates for
Physics 2048 Test 1 Solution (solutions to problems 2-5 are from student papers) Problem 1 (Short Answer: 20 points)
Physics 248 Test 1 Solution (solutions to problems 25 are from student papers) Problem 1 (Short Answer: 2 points) An object's motion is restricted to one dimension along the distance axis. Answer each
Exam 1 Review Questions PHY 2425 - Exam 1
Exam 1 Review Questions PHY 2425 - Exam 1 Exam 1H Rev Ques.doc - 1 - Section: 1 7 Topic: General Properties of Vectors Type: Conceptual 1 Given vector A, the vector 3 A A) has a magnitude 3 times that
5. Unable to determine. 6. 4 m correct. 7. None of these. 8. 1 m. 9. 1 m. 10. 2 m. 1. 1 m/s. 2. None of these. 3. Unable to determine. 4.
Version PREVIEW B One D Kine REVIEW burke (1111) 1 This print-out should have 34 questions. Multiple-choice questions may continue on the next column or page find all choices before answering. Jogging
1 of 7 9/5/2009 6:12 PM
1 of 7 9/5/2009 6:12 PM Chapter 2 Homework Due: 9:00am on Tuesday, September 8, 2009 Note: To understand how points are awarded, read your instructor's Grading Policy. [Return to Standard Assignment View]
Ground Rules. PC1221 Fundamentals of Physics I. Kinematics. Position. Lectures 3 and 4 Motion in One Dimension. Dr Tay Seng Chuan
Ground Rules PC11 Fundamentals of Physics I Lectures 3 and 4 Motion in One Dimension Dr Tay Seng Chuan 1 Switch off your handphone and pager Switch off your laptop computer and keep it No talking while
Worksheet 1. What You Need to Know About Motion Along the x-axis (Part 1)
Worksheet 1. What You Need to Know About Motion Along the x-axis (Part 1) In discussing motion, there are three closely related concepts that you need to keep straight. These are: If x(t) represents the
Motion Graphs. Plotting distance against time can tell you a lot about motion. Let's look at the axes:
Motion Graphs 1 Name Motion Graphs Describing the motion of an object is occasionally hard to do with words. Sometimes graphs help make motion easier to picture, and therefore understand. Remember: Motion
2After completing this chapter you should be able to
After completing this chapter you should be able to solve problems involving motion in a straight line with constant acceleration model an object moving vertically under gravity understand distance time
Worksheet for Exploration 2.1: Compare Position vs. Time and Velocity vs. Time Graphs
Worksheet for Exploration 2.1: Compare Position vs. Time and Velocity vs. Time Graphs Shown are three different animations, each with three toy monster trucks moving to the right. Two ways to describe
ACCELERATION DUE TO GRAVITY
EXPERIMENT 1 PHYSICS 107 ACCELERATION DUE TO GRAVITY Skills you will learn or practice: Calculate velocity and acceleration from experimental measurements of x vs t (spark positions) Find average velocities
1 One Dimensional Horizontal Motion Position vs. time Velocity vs. time
PHY132 Experiment 1 One Dimensional Horizontal Motion Position vs. time Velocity vs. time One of the most effective methods of describing motion is to plot graphs of distance, velocity, and acceleration
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) Vector A has length 4 units and directed to the north. Vector B has length 9 units and is directed
Freely Falling Objects
Freely Falling Objects Physics 1425 Lecture 3 Michael Fowler, UVa. Today s Topics In the previous lecture, we analyzed onedimensional motion, defining displacement, velocity, and acceleration and finding
Chapter 3 Falling Objects and Projectile Motion
Chapter 3 Falling Objects and Projectile Motion Gravity influences motion in a particular way. How does a dropped object behave?!does the object accelerate, or is the speed constant?!do two objects behave
To define concepts such as distance, displacement, speed, velocity, and acceleration.
Chapter 7 Kinematics of a particle Overview In kinematics we are concerned with describing a particle s motion without analysing what causes or changes that motion (forces). In this chapter we look at
Motion. Complete Table 1. Record all data to three decimal places (e.g., 4.000 or 6.325 or 0.000). Do not include units in your answer.
Labs for College Physics: Mechanics Worksheet Experiment 2-1 Motion As you work through the steps in the lab procedure, record your experimental values and the results on this worksheet. Use the exact
Review Chapters 2, 3, 4, 5
Review Chapters 2, 3, 4, 5 4) The gain in speed each second for a freely-falling object is about A) 0. B) 5 m/s. C) 10 m/s. D) 20 m/s. E) depends on the initial speed 9) Whirl a rock at the end of a string
2008 FXA DERIVING THE EQUATIONS OF MOTION 1. Candidates should be able to :
Candidates should be able to : Derive the equations of motion for constant acceleration in a straight line from a velocity-time graph. Select and use the equations of motion for constant acceleration in
Problem Set 1. Ans: a = 1.74 m/s 2, t = 4.80 s
Problem Set 1 1.1 A bicyclist starts from rest and after traveling along a straight path a distance of 20 m reaches a speed of 30 km/h. Determine her constant acceleration. How long does it take her to
PHYS 117- Exam I. Multiple Choice Identify the letter of the choice that best completes the statement or answers the question.
PHYS 117- Exam I Multiple Choice Identify the letter of the choice that best completes the statement or answers the question. 1. Car A travels from milepost 343 to milepost 349 in 5 minutes. Car B travels
Speed, Velocity and Acceleration Lab
Speed, Velocity and Acceleration Lab Name In this lab, you will compare and learn the differences between speed, velocity, and acceleration. You will have two days to complete the lab. There will be some
Physics Midterm Review Packet January 2010
Physics Midterm Review Packet January 2010 This Packet is a Study Guide, not a replacement for studying from your notes, tests, quizzes, and textbook. Midterm Date: Thursday, January 28 th 8:15-10:15 Room:
Acceleration Introduction: Objectives: Methods:
Acceleration Introduction: Acceleration is defined as the rate of change of velocity with respect to time, thus the concepts of velocity also apply to acceleration. In the velocity-time graph, acceleration
Projectile motion simulator. http://www.walter-fendt.de/ph11e/projectile.htm
More Chapter 3 Projectile motion simulator http://www.walter-fendt.de/ph11e/projectile.htm The equations of motion for constant acceleration from chapter 2 are valid separately for both motion in the x
Newton s Laws Quiz Review
Newton s Laws Quiz Review Name Hour To be properly prepared for this quiz you should be able to do the following: 1) state each of Newton s three laws of motion 2) pick out examples of the three laws from
Physics Notes Class 11 CHAPTER 3 MOTION IN A STRAIGHT LINE
1 P a g e Motion Physics Notes Class 11 CHAPTER 3 MOTION IN A STRAIGHT LINE If an object changes its position with respect to its surroundings with time, then it is called in motion. Rest If an object
Experiment 2 Free Fall and Projectile Motion
Name Partner(s): Experiment 2 Free Fall and Projectile Motion Objectives Preparation Pre-Lab Learn how to solve projectile motion problems. Understand that the acceleration due to gravity is constant (9.8
FREE FALL. Introduction. Reference Young and Freedman, University Physics, 12 th Edition: Chapter 2, section 2.5
Physics 161 FREE FALL Introduction This experiment is designed to study the motion of an object that is accelerated by the force of gravity. It also serves as an introduction to the data analysis capabilities
Despite its enormous mass (425 to 900 kg), the Cape buffalo is capable of running at a top speed of about 55 km/h (34 mi/h).
Revised Pages PART ONE Mechanics CHAPTER Motion Along a Line 2 Despite its enormous mass (425 to 9 kg), the Cape buffalo is capable of running at a top speed of about 55 km/h (34 mi/h). Since the top speed
2-1 Position, Displacement, and Distance
2-1 Position, Displacement, and Distance In describing an object s motion, we should first talk about position where is the object? A position is a vector because it has both a magnitude and a direction:
Speed A B C. Time. Chapter 3: Falling Objects and Projectile Motion
Chapter 3: Falling Objects and Projectile Motion 1. Neglecting friction, if a Cadillac and Volkswagen start rolling down a hill together, the heavier Cadillac will get to the bottom A. before the Volkswagen.
Chapter 2 Solutions. 4. We find the average velocity from
Chapter 2 Solutions 4. We find the aerage elocity from = (x 2 x 1 )/(t 2 t 1 ) = ( 4.2 cm 3.4 cm)/(6.1 s 3.0 s) = 2.5 cm/s (toward x). 6. (a) We find the elapsed time before the speed change from speed
Uniformly Accelerated Motion
Uniformly Accelerated Motion Under special circumstances, we can use a series of three equations to describe or predict movement V f = V i + at d = V i t + 1/2at 2 V f2 = V i2 + 2ad Most often, these equations
v v ax v a x a v a v = = = Since F = ma, it follows that a = F/m. The mass of the arrow is unchanged, and ( )
Week 3 homework IMPORTANT NOTE ABOUT WEBASSIGN: In the WebAssign versions of these problems, various details have been changed, so that the answers will come out differently. The method to find the solution
Newton s Laws. Physics 1425 lecture 6. Michael Fowler, UVa.
Newton s Laws Physics 1425 lecture 6 Michael Fowler, UVa. Newton Extended Galileo s Picture of Galileo said: Motion to Include Forces Natural horizontal motion is at constant velocity unless a force acts:
Name Partners Date. Energy Diagrams I
Name Partners Date Visual Quantum Mechanics The Next Generation Energy Diagrams I Goal Changes in energy are a good way to describe an object s motion. Here you will construct energy diagrams for a toy
PLOTTING DATA AND INTERPRETING GRAPHS
PLOTTING DATA AND INTERPRETING GRAPHS Fundamentals of Graphing One of the most important sets of skills in science and mathematics is the ability to construct graphs and to interpret the information they
Chapter 3 Practice Test
Chapter 3 Practice Test Multiple Choice Identify the choice that best completes the statement or answers the question. 1. Which of the following is a physical quantity that has both magnitude and direction?
Ch 7 Kinetic Energy and Work. Question: 7 Problems: 3, 7, 11, 17, 23, 27, 35, 37, 41, 43
Ch 7 Kinetic Energy and Work Question: 7 Problems: 3, 7, 11, 17, 23, 27, 35, 37, 41, 43 Technical definition of energy a scalar quantity that is associated with that state of one or more objects The state
Work, Energy & Momentum Homework Packet Worksheet 1: This is a lot of work!
Work, Energy & Momentum Homework Packet Worksheet 1: This is a lot of work! 1. A student holds her 1.5-kg psychology textbook out of a second floor classroom window until her arm is tired; then she releases
http://www.webassign.net/v4cgikchowdary@evergreen/assignments/prev... 1 of 10 7/29/2014 7:28 AM 2 of 10 7/29/2014 7:28 AM
HW1 due 6 pm Day 3 (Wed. Jul. 30) 2. Question Details OSColPhys1 2.P.042.Tutorial.WA. [2707433] Question 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 (a) The graph below plots the position versus time
ENTRANCE EXAMINATION FOR THE BACHELOR OF ENGINEERING DEGREE PROGRAMMES
ENTRANCE EXAMINATION FOR THE BACHELOR OF ENGINEERING DEGREE PROGRAMMES INSTRUCTIONS The Entrance Examination consists of three parts: Problem Solving (Part 1), Questions on Motivation (Part ), English
C B A T 3 T 2 T 1. 1. What is the magnitude of the force T 1? A) 37.5 N B) 75.0 N C) 113 N D) 157 N E) 192 N
Three boxes are connected by massless strings and are resting on a frictionless table. Each box has a mass of 15 kg, and the tension T 1 in the right string is accelerating the boxes to the right at a
Speed (a scalar quantity) is the distance travelled every second.
SCALAR and VECTOR QUANTITIES The following are some of the quantities you will meet in the Intermediate Physics course: DISTANCE, DISPLACEMENT, SPEED, VELOCITY, TIME, FORCE. Quantities can be divided into
Name: Partners: Period: Coaster Option: 1. In the space below, make a sketch of your roller coaster.
1. In the space below, make a sketch of your roller coaster. 2. On your sketch, label different areas of acceleration. Put a next to an area of negative acceleration, a + next to an area of positive acceleration,
Inertia, Forces, and Acceleration: The Legacy of Sir Isaac Newton
Inertia, Forces, and Acceleration: The Legacy of Sir Isaac Newton Position is a Vector Compare A A ball is 12 meters North of the Sun God to A A ball is 10 meters from here A vector has both a direction
Linear functions Increasing Linear Functions. Decreasing Linear Functions
3.5 Increasing, Decreasing, Max, and Min So far we have been describing graphs using quantitative information. That s just a fancy way to say that we ve been using numbers. Specifically, we have described
State Newton's second law of motion for a particle, defining carefully each term used.
5 Question 1. [Marks 20] An unmarked police car P is, travelling at the legal speed limit, v P, on a straight section of highway. At time t = 0, the police car is overtaken by a car C, which is speeding
Chapter 7 WORK, ENERGY, AND Power Work Done by a Constant Force Kinetic Energy and the Work-Energy Theorem Work Done by a Variable Force Power
Chapter 7 WORK, ENERGY, AND Power Work Done by a Constant Force Kinetic Energy and the Work-Energy Theorem Work Done by a Variable Force Power Examples of work. (a) The work done by the force F on this
Work, Power, Energy Multiple Choice. PSI Physics. Multiple Choice Questions
Work, Power, Energy Multiple Choice PSI Physics Name Multiple Choice Questions 1. A block of mass m is pulled over a distance d by an applied force F which is directed in parallel to the displacement.
Plot the following two points on a graph and draw the line that passes through those two points. Find the rise, run and slope of that line.
Objective # 6 Finding the slope of a line Material: page 117 to 121 Homework: worksheet NOTE: When we say line... we mean straight line! Slope of a line: It is a number that represents the slant of a line
Freely Falling Bodies & Uniformly Accelerated Motion
Physics Trinity Valley School Page 1 Lesson 24 Galileo, Freely Falling Bodies & Uniformly Accelerated Motion Galileo argued that a freely falling body is undergoing uniform acceleration. Its speed is increasing
Conservative vs. Non-conservative forces Gravitational Potential Energy. Work done by non-conservative forces and changes in mechanical energy
Next topic Conservative vs. Non-conservative forces Gravitational Potential Energy Mechanical Energy Conservation of Mechanical energy Work done by non-conservative forces and changes in mechanical energy
Supplemental Questions
Supplemental Questions The fastest of all fishes is the sailfish. If a sailfish accelerates at a rate of 14 (km/hr)/sec [fwd] for 4.7 s from its initial velocity of 42 km/h [fwd], what is its final velocity?
8. Potential Energy and Conservation of Energy Potential Energy: When an object has potential to have work done on it, it is said to have potential
8. Potential Energy and Conservation of Energy Potential Energy: When an object has potential to have work done on it, it is said to have potential energy, e.g. a ball in your hand has more potential energy
Physics 201 Homework 8
Physics 201 Homework 8 Feb 27, 2013 1. A ceiling fan is turned on and a net torque of 1.8 N-m is applied to the blades. 8.2 rad/s 2 The blades have a total moment of inertia of 0.22 kg-m 2. What is the
P211 Midterm 2 Spring 2004 Form D
1. An archer pulls his bow string back 0.4 m by exerting a force that increases uniformly from zero to 230 N. The equivalent spring constant of the bow is: A. 115 N/m B. 575 N/m C. 1150 N/m D. 287.5 N/m
III. Applications of Force and Motion Concepts. Concept Review. Conflicting Contentions. 1. Airplane Drop 2. Moving Ball Toss 3. Galileo s Argument
III. Applications of Force and Motion Concepts Concept Review Conflicting Contentions 1. Airplane Drop 2. Moving Ball Toss 3. Galileo s Argument Qualitative Reasoning 1. Dropping Balls 2. Spinning Bug
COEFFICIENT OF KINETIC FRICTION
COEFFICIENT OF KINETIC FRICTION LAB MECH 5.COMP From Physics with Computers, Vernier Software & Technology, 2000. INTRODUCTION If you try to slide a heavy box resting on the floor, you may find it difficult
Tennessee State University
Tennessee State University Dept. of Physics & Mathematics PHYS 2010 CF SU 2009 Name 30% Time is 2 hours. Cheating will give you an F-grade. Other instructions will be given in the Hall. MULTIPLE CHOICE.
Ahmet Sami KILINÇ, Tamer BAYBURA. Presented by Ahmet Sami KILINÇ
Determination of Minimum Horizontal Curve Radius Used in the Design of Transportation Structures, Depending on the Limit Value of Comfort Criterion Lateral Jerk Ahmet Sami KILINÇ, Tamer BAYBURA Presented
TEACHER ANSWER KEY November 12, 2003. Phys - Vectors 11-13-2003
Phys - Vectors 11-13-2003 TEACHER ANSWER KEY November 12, 2003 5 1. A 1.5-kilogram lab cart is accelerated uniformly from rest to a speed of 2.0 meters per second in 0.50 second. What is the magnitude
KINEMATICS OF PARTICLES RELATIVE MOTION WITH RESPECT TO TRANSLATING AXES
KINEMTICS OF PRTICLES RELTIVE MOTION WITH RESPECT TO TRNSLTING XES In the previous articles, we have described particle motion using coordinates with respect to fixed reference axes. The displacements,
State Newton's second law of motion for a particle, defining carefully each term used.
5 Question 1. [Marks 28] An unmarked police car P is, travelling at the legal speed limit, v P, on a straight section of highway. At time t = 0, the police car is overtaken by a car C, which is speeding
Chapter 7: Momentum and Impulse
Chapter 7: Momentum and Impulse 1. When a baseball bat hits the ball, the impulse delivered to the ball is increased by A. follow through on the swing. B. rapidly stopping the bat after impact. C. letting
Chapter 6 Work and Energy
Chapter 6 WORK AND ENERGY PREVIEW Work is the scalar product of the force acting on an object and the displacement through which it acts. When work is done on or by a system, the energy of that system
Projectile Motion 1:Horizontally Launched Projectiles
A cannon shoots a clown directly upward with a speed of 20 m/s. What height will the clown reach? How much time will the clown spend in the air? Projectile Motion 1:Horizontally Launched Projectiles Two
SQA CfE Higher Physics Unit 1: Our Dynamic Universe
SCHOLAR Study Guide SQA CfE Higher Physics Unit 1: Our Dynamic Universe Authored by: Ian Holton Previously authored by: Douglas Gavin John McCabe Andrew Tookey Campbell White Reviewed by: Grant McAllister
EXPERIMENT 3 Analysis of a freely falling body Dependence of speed and position on time Objectives
EXPERIMENT 3 Analysis of a freely falling body Dependence of speed and position on time Objectives to verify how the distance of a freely-falling body varies with time to investigate whether the velocity
Name Period WORKSHEET: KINETIC AND POTENTIAL ENERGY PROBLEMS. 1. Stored energy or energy due to position is known as energy.
Name Period Date WORKSHEET: KINETIC AND POTENTIAL ENERGY PROBLEMS 1. Stored energy or energy due to position is known as energy. 2. The formula for calculating potential energy is. 3. The three factors
Physics 1010: The Physics of Everyday Life. TODAY Velocity, Acceleration 1D motion under constant acceleration Newton s Laws
Physics 11: The Physics of Everyday Life TODAY, Acceleration 1D motion under constant acceleration Newton s Laws 1 VOLUNTEERS WANTED! PHET, The PHysics Educational Technology project, is looking for students
circular motion & gravitation physics 111N
circular motion & gravitation physics 111N uniform circular motion an object moving around a circle at a constant rate must have an acceleration always perpendicular to the velocity (else the speed would
WORKSHEET: KINETIC AND POTENTIAL ENERGY PROBLEMS
WORKSHEET: KINETIC AND POTENTIAL ENERGY PROBLEMS 1. Stored energy or energy due to position is known as Potential energy. 2. The formula for calculating potential energy is mgh. 3. The three factors that
HSC Mathematics - Extension 1. Workshop E4
HSC Mathematics - Extension 1 Workshop E4 Presented by Richard D. Kenderdine BSc, GradDipAppSc(IndMaths), SurvCert, MAppStat, GStat School of Mathematics and Applied Statistics University of Wollongong
Chapter 5 Using Newton s Laws: Friction, Circular Motion, Drag Forces. Copyright 2009 Pearson Education, Inc.
Chapter 5 Using Newton s Laws: Friction, Circular Motion, Drag Forces Units of Chapter 5 Applications of Newton s Laws Involving Friction Uniform Circular Motion Kinematics Dynamics of Uniform Circular
Physics 2A, Sec B00: Mechanics -- Winter 2011 Instructor: B. Grinstein Final Exam
Physics 2A, Sec B00: Mechanics -- Winter 2011 Instructor: B. Grinstein Final Exam INSTRUCTIONS: Use a pencil #2 to fill your scantron. Write your code number and bubble it in under "EXAM NUMBER;" an entry
Problem Set V Solutions
Problem Set V Solutions. Consider masses m, m 2, m 3 at x, x 2, x 3. Find X, the C coordinate by finding X 2, the C of mass of and 2, and combining it with m 3. Show this is gives the same result as 3
Lesson 2.15: Physical Science Speed, Velocity & Acceleration
Weekly Focus: Reading for Comprehension Weekly Skill: Numeracy Skills in Science Lesson Summary: This week students will continue reading for comprehension with reading passages on speed, velocity, and
Worksheet #1 Free Body or Force diagrams
Worksheet #1 Free Body or Force diagrams Drawing Free-Body Diagrams Free-body diagrams are diagrams used to show the relative magnitude and direction of all forces acting upon an object in a given situation.
Curso2012-2013 Física Básica Experimental I Cuestiones Tema IV. Trabajo y energía.
1. A body of mass m slides a distance d along a horizontal surface. How much work is done by gravity? A) mgd B) zero C) mgd D) One cannot tell from the given information. E) None of these is correct. 2.
Motion & The Global Positioning System (GPS)
Grade Level: K - 8 Subject: Motion Prep Time: < 10 minutes Duration: 30 minutes Objective: To learn how to analyze GPS data in order to track an object and derive its velocity from positions and times.
MOTION DIAGRAMS. Revised 9/05-1 - LC, tlo
MOTION DIAGRAMS When first applying kinematics (motion) principles, there is a tendency to use the wrong kinematics quantity - to inappropriately interchange quantities such as position, velocity, and
KE =? v o. Page 1 of 12
Page 1 of 12 CTEnergy-1. A mass m is at the end of light (massless) rod of length R, the other end of which has a frictionless pivot so the rod can swing in a vertical plane. The rod is initially horizontal
Midterm Exam 1 October 2, 2012
Midterm Exam 1 October 2, 2012 Name: Instructions 1. This examination is closed book and closed notes. All your belongings except a pen or pencil and a calculator should be put away and your bookbag should
Conceptual Questions: Forces and Newton s Laws
Conceptual Questions: Forces and Newton s Laws 1. An object can have motion only if a net force acts on it. his statement is a. true b. false 2. And the reason for this (refer to previous question) is
AP Physics B Practice Workbook Book 1 Mechanics, Fluid Mechanics and Thermodynamics
AP Physics B Practice Workbook Book 1 Mechanics, Fluid Mechanics and Thermodynamics. The following( is applicable to this entire document copies for student distribution for exam preparation explicitly
Chapter 4. Forces and Newton s Laws of Motion. continued
Chapter 4 Forces and Newton s Laws of Motion continued 4.9 Static and Kinetic Frictional Forces When an object is in contact with a surface forces can act on the objects. The component of this force acting
Determining the Acceleration Due to Gravity
Chabot College Physics Lab Scott Hildreth Determining the Acceleration Due to Gravity Introduction In this experiment, you ll determine the acceleration due to earth s gravitational force with three different
General Physics Lab: Atwood s Machine
General Physics Lab: Atwood s Machine Introduction One may study Newton s second law using a device known as Atwood s machine, shown below. It consists of a pulley and two hanging masses. The difference