Work, Energy & Momentum Homework Packet Worksheet 1: This is a lot of work!


 Chester Stone
 1 years ago
 Views:
Transcription
1 Work, Energy & Momentum Homework Packet Worksheet 1: This is a lot of work! 1. A student holds her 1.5kg psychology textbook out of a second floor classroom window until her arm is tired; then she releases it. a. How much work is done on the book by the student in simply holding it out the window? b. How much work is done by the force of gravity during the time it falls 3.0 m? 2. You are carrying a backpack across campus. What is the work done by your verticalcarrying force on the backpack? Explain. 3. A 500. kg lightweight helicopter ascends from the ground with an acceleration of 2.00 m/s 2. Over a 5.00 sec interval, what is a. The distance the helicopter traveled? b. The work done by the lifting force? c. The work done by the gravitational force? d. The net work done on the helicopter? 4. A 0.75kg block slides with a uniform velocity down a 20.0 o inclined plane of horizontal length 1.2 m, as shown. a. Calculate the length of the ramp. b. How much work is done by the force of friction on the block as it slides the total length of the plane? c. What is the net work done on the block? (Explain/show work) L = 1.2m θ 5. (Challenge Problem) A worker pulls a 40.0kg crate with a rope at the 30.0 o angle to the horizontal. The coefficient of sliding friction between the crate and the floor is If he moves the crate with a constant velocity a distance of 7.00 m, how much work does the worker do on the crate? (hint: make 2 equations for 2 unknowns) KINETIC ENERGY & THE WORK ENERGY THEOREM 6. You want to decrease the kinetic energy of an object by as much as you can. You can do so by reducing the mass by half or reducing the speed by half. Which should you do and why? 7. A 1200kg automobile travels at 90.0 km/h. a. What is its kinetic energy? b. What net work would be required to bring it to a stop? 8. A 2.5 g bullet traveling at 350 m/s hits a tree and slows uniformly to a stop while penetrating a distance of 12 cm into the tree s trunk. What force was exerted on the bullet in bringing it to rest? 9. An 88g arrow is fired from a bow whose string exerts an average force of 110 N on the arrow over a distance of 78 cm. a. What is the speed of the arrow as it leaves the bow? b. How far down range will the arrow go if it is released horizontally from the bow and 1.5 m from the ground?
2 Worksheet 2: Conservation of Energy (w/ nonconservative forces) KE i + PE i = KE f + PE f 1. A 50.0 kg block at rest is dropped from a height of 20.0 m. a. Find PEi b. Find KEi c. What is the total energy of the system? d. Find PE when the block has been dropped down to the 5.0 m level. e. Find KE when the block has dropped to the 5.0 m level. f. Find the velocity when the block has dropped to the 5.0 m level. g. Find PE the instant before hitting the ground. h. Find KE the instant before hitting the ground. i. Find the velocity the instant before hitting the ground. 2. A 3.0 kg physics book at rest is accidentally dropped from the top of a very tall building (60.0 m) a. Find PEi b. Find KEi c. Find total energy of the system. d. Find PE when the book has dropped 10.0 m (not down to the 10m level) e. Find KE when the book has dropped 10.0 m f. Find the velocity when the book has dropped 10.0m g. Find the PE at the 20. m level. h. Find the KE at the 5.0 m level i. Find the velocity of the book at the 5.0 m level. Enter Nonconservative Forces: KE i + PE i + E added = KE f + PE f + E lost 3. A 4.0 kg block initially at rest is pushed on a level, frictionless surface with a constant force of 10. N for 6.0 m a. Find the speed of the block at 6.0 m b. Find the speed of the block at 2.0 m 4. A 20. kg crate at rest on a 10. m high ramp, requires a 100. J push to get it moving down the ramp. The ramp and crate experience 20. J of friction. What is the kinetic energy of the block at the bottom of the ramp? 5. A 5.0 kg block, initially at rest, slides down a 30.0 o ramp with a constant frictional force of 2.0 N. The top of the ramp is 6.0 m vertically from the bottom. a. How much energy does the block loose because of friction? b. How fast is the block going when it reaches the bottom? 6. Block A and block B have masses of 4.0 kg each. Block A is dropped from a 15 m building and block B slides down a frictionless ramp from the top of the same building. a. Which block is going fastest at the bottom? b. What is that velocity?
3 Worksheet 3: You Have the POWER 1. A 60.0 kg jogger runs, at constant velocity, up a long flight of stairs in 4.0 sec. The vertical height of the stairs is 4.5 m. a. If the only force the jogger has to overcome is her weight, calculate the jogger s power output in watts and horsepower. b. How much energy did this require? 2. A girl consumes 8.4x10 6 J (2000 food calories) of energy in one day while maintaining a constant weight. What is the average power she produces in a day? 3. Calculate the power required on a 1400 kg car while climbing a 10. o hill (a fairly steep hill) at a steady 80.0 km/h. Resistive forces on the car are 700. N. 4. A car generates 18 hp when traveling at a steady 88 km/h. a. What is the average retarding force exerted on the car? b. What are some things this force could be due to? 5. A shot putter accelerates a 7.3 kg shot from rest to 14 m/s. If this motion takes 1.5 sec, what average power was developed? 6. Does efficiency describe how fast work is done? Explain. 7. Does a more powerful machine always perform more work than a less powerful one? Explain
4 Worksheet 4: Momentum, Impulse, and Conservation of Energy Momentum and Impulse 1. A fast athlete, of mass 70. kg, can run at 10. m/s. At what speed would the following have the same momentum: a. A 20. g bullet? b. A 1500 kg car? 2. A 1.0x10 4 kg truck moves at 30. m/s. At what speed would a 1200 kg car have the same value of a. linear momentum? b. kinetic energy? 3. A ball of mass kg is dropped from rest from a height of 1.25 m. It rebounds from the floor to reach a height of m. What impulse was given to the ball by the floor? 4. A 0.10 kg ball is thrown straight up into the air with an initial speed of 15 m/s. Find the momentum of the ball a. at it s maximum height? b. halfway to its maximum height? 5. A pitcher claims he can throw a kg baseball with as much momentum as a 3.00 g bullet moving with a speed of 1500 m/s. a. What is the baseball s speed if the pitcher s claim is valid? b. Which has greater kinetic energy, the ball or the bullet? Explain. 6. A 3.0 kg steel ball strikes a massive wall at 10.0 m/s at an angle of 60. o with the plane of the wall. If bounces off the wall with the same speed and angle. If the ball is in contact with the wall for 0.20 s, what is the average force exerted by the wall on the ball? Conservation of Energy 7. A 20 kg child starts from rest and reaches 4 m/s at the bottom of a 20 o slide of length 4 m. What is the coefficient of kinetic friction? 8. A 60 g tennis ball thrown vertically up at 24 m/s rises to a maximum height of 26 m. What was the work done by resistive forces? 9. A 0.30 kg block is pushed against a spring (k = 8 N/m) thereby compressing it by 24 cm. After it is released the lock travels a total distance of 52 cm before coming to rest. What is the coefficient of kinetic friction for the surface? 10. A 2 kg block starts from rest at an initial height of 40 cm and slides down a frictionless circular ramp. It slides for 83 cm on the horizontal surface before coming to a stop. What is the coefficient of kinetic friction?
5 Worksheet 5: Playing with Momentum 1. Kim holds a 2.0 kg air rifle loosely and fires a bullet of mass 1.0 g. The muzzle velocity of the bullet is 150 m/s. a. What is the recoil speed of the gun? b. Now the girl, with a mass of 48 kg, holds the gun tightly against her body. What is the new recoil speed? c. Why is this speed so much less then before? 2. An astronaut of mass 80. kg caries an empty oxygen tank of mass 10. Kg. He throws the tank away from himself with a speed of 2.0 m/s. With what speed does he start to move off into space? 3. In a freight yard, a train is being put together from freight cars. An empty freight car, coasting at 10. m/s strikes a loaded car that is stationary, and the cars couple (stick) together. Each of the cars has a mass of 3.0 x 10 3 kg when empty, and the loaded car contains 12,000 kg of canned soda (a year s supply for the physics class). Which what speed does the combination of the two cars move? 4. A tennis player returns a 30. m/s serve straight back at 25 m/s after making contact with the ball for 0.50 sec. If the ball has a mass of 0.20 kg, what is the force she exerted on the ball? 5. Two students are fighting with snowballs. Each throws a snowball in such a way that the two balls collide inelastically. Snowball A is 1.0 kg and snowball B is 7.0 x 10 2 g. Each snowball has a speed of 12 m/s. What is the speed and direction of the combined snow mass? 6. As the snowball fight continues, one 70. kg student launches the other 70. kg student across the frozen frictionless pond at 8.0 m/s towards a tree on the other side. The sliding student goes through a snowman which reduces his speed to 3.0 m/s. a. What is the change in momentum for the sliding student? b. If it takes the student 0.30 seconds to go through the snowman, what is the average force applied by the snowman? c. If it takes just 0.10 seconds to stop at the tree, what is the average force experienced by the previously sliding student? 7. One of the student s mom sees them fighting and tells them to hug and say they are sorry. Student A skating at 5.0 m/s east is caught in a bear hug by student B who is skating 8.0 m/s north. a. What is the final velocity and direction of the hugging students? b. Together the two boys slide 4.2 m before coming to a rest. What is the coefficient of friction of the ice?
6 Worksheet 6: Mixed Review  Energy & Momentum 1. A 150g baseball reaches a batter with a speed of 25 m/s. After it has been struck, it leaves the bat at 35 m/s in the opposite direction. If the ball was in contact with the bat for.001 s, find the average force exerted on it during this period. (9 kn) 2. A 30.0 kg girl who is running at 3.0 m/s jumps on a stationary 10.0 kg sled on a frozen lake. How fast does the sled then move? (2.3 m/s) 3. A 0.5 kg stone moving north at 4 m/s collides with a 4 kg lump of clay moving west at 1 m/s. The stone becomes embedded in the clay. What is the velocity of the composite body after the collision? (1 m/s) 4. A 1.0 kg block, starting from 5.0 m high slides without friction down the slope as shown. At the bottom, it collides inelastically with a 5.0 kg block that is initially at rest. To what height (h) will the two block combo slide up the slope? (0.14m) 5m h 5. A kg bullet traveling at 300. m/s hits a 5.0 kg block of wood and becomes imbedded in the block. The block then slides without friction into a spring. If the spring is compressed.25 m, calculate its spring constant. (65,000 N/m) 6. A 20.0 kg block moving at 5.0 m/s hits a stationary 5.0 kg bock. The stick together and hit a spring with a spring constant of 200. N/m. How far is the spring compressed? (1.4 m) 7. A 5.0 kg football hits is caught by a 55 kg kid. Knocked off balanced by the catch, the kid then falls and slides down a frictionless 1.0 m tall hill. At the bottom of the hill, the kid slides 1.4 m on the pavement, where the coefficient of kinetic friction is How fast was the football initially thrown? (12m/s; answers may vary depending on rounding) 8. A 20. kg crate at rest on a 10. m high ramp, requires a 100. J push to get it moving down the ramp. The ramp and crate experience 20. J of friction. What is the kinetic energy of the block at the bottom of the ramp? (2.0x10 3 J) 9. A worker pulls a 40.0kg crate with a rope at the 30.0 o angle to the horizontal. The coefficient of sliding friction between the crate and the floor is If he moves the crate with a constant velocity a distance of 7.00 m, how much work does the worker do on the crate? (1150J) 10. A 35 g superball hits a wall at 10.0 m/s. If bounces off the wall with a speed of 8.0 m/s and the ball is in contact with the wall for 0.20 s, what is the average force exerted by the wall on the ball? (3.2 N) 11. A 2.5 kg block starts from rest at an initial height of 35 cm and slides down a frictionless circular ramp. It slides for 83 cm on a horizontal frictionfilled surface before coming to a stop. What is the coefficient of kinetic friction? (0.42) 12. A 70. kg skier is pulled 60. m up a 30. degree frictionless slope at 2.0 m/s. How much work is done & what is the power of the motor? (21,000 J; 690 W)
Assignment Work (Physics) Class :Xi Chapter :04: Motion In PLANE
1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. Assignment Work (Physics) Class :Xi Chapter :04: Motion In PLANE State law of parallelogram of vector addition and derive expression for resultant of two vectors
More informationPhysics 125 Practice Exam #3 Chapters 67 Professor Siegel
Physics 125 Practice Exam #3 Chapters 67 Professor Siegel Name: Lab Day: 1. A concrete block is pulled 7.0 m across a frictionless surface by means of a rope. The tension in the rope is 40 N; and the
More information1) 0.33 m/s 2. 2) 2 m/s 2. 3) 6 m/s 2. 4) 18 m/s 2 1) 120 J 2) 40 J 3) 30 J 4) 12 J. 1) unchanged. 2) halved. 3) doubled.
Base your answers to questions 1 through 5 on the diagram below which represents a 3.0kilogram mass being moved at a constant speed by a force of 6.0 Newtons. 4. If the surface were frictionless, the
More informationChapter 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
More informationAP Physics C Fall Final Web Review
Name: Class: _ Date: _ AP Physics C Fall Final Web Review Multiple Choice Identify the choice that best completes the statement or answers the question. 1. On a position versus time graph, the slope of
More information9. The kinetic energy of the moving object is (1) 5 J (3) 15 J (2) 10 J (4) 50 J
1. If the kinetic energy of an object is 16 joules when its speed is 4.0 meters per second, then the mass of the objects is (1) 0.5 kg (3) 8.0 kg (2) 2.0 kg (4) 19.6 kg Base your answers to questions 9
More informationDifferentiated Physics Practice Questions
Differentiated Physics Practice Questions Multiple Choice Identify the choice that best completes the statement or answers the question. 1. A 100kg cannon at rest contains a 10kg cannon ball. When fired,
More informationB) 40.8 m C) 19.6 m D) None of the other choices is correct. Answer: B
Practice Test 1 1) Abby throws a ball straight up and times it. She sees that the ball goes by the top of a flagpole after 0.60 s and reaches the level of the top of the pole after a total elapsed time
More informationPHYSICS MIDTERM REVIEW
1. The acceleration due to gravity on the surface of planet X is 19.6 m/s 2. If an object on the surface of this planet weighs 980. newtons, the mass of the object is 50.0 kg 490. N 100. kg 908 N 2. If
More information10.1 Quantitative. Answer: A Var: 50+
Chapter 10 Energy and Work 10.1 Quantitative 1) A child does 350 J of work while pulling a box from the ground up to his tree house with a rope. The tree house is 4.8 m above the ground. What is the mass
More informationF N A) 330 N 0.31 B) 310 N 0.33 C) 250 N 0.27 D) 290 N 0.30 E) 370 N 0.26
Physics 23 Exam 2 Spring 2010 Dr. Alward Page 1 1. A 250N force is directed horizontally as shown to push a 29kg box up an inclined plane at a constant speed. Determine the magnitude of the normal force,
More informationP211 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
More informationUnit 3 Practice Test: Dynamics
Unit 3 Practice Test: Dynamics Multiple Choice Identify the letter of the choice that best completes the statement or answers the question. 1. What is the common formula for work? a. W = F x c. W = Fd
More informationB) 286 m C) 325 m D) 367 m Answer: B
Practice Midterm 1 1) When a parachutist jumps from an airplane, he eventually reaches a constant speed, called the terminal velocity. This means that A) the acceleration is equal to g. B) the force of
More informationAP Physics  Chapter 8 Practice Test
AP Physics  Chapter 8 Practice Test Multiple Choice Identify the choice that best completes the statement or answers the question. 1. A single conservative force F x = (6.0x 12) N (x is in m) acts on
More informationPHY231 Section 2, Form A March 22, 2012. 1. Which one of the following statements concerning kinetic energy is true?
1. Which one of the following statements concerning kinetic energy is true? A) Kinetic energy can be measured in watts. B) Kinetic energy is always equal to the potential energy. C) Kinetic energy is always
More information2. (P2.1 A) a) A car travels 150 km in 3 hours, what is the cars average speed?
Physics: Review for Final Exam 1 st Semester Name Hour P2.1A Calculate the average speed of an object using the change of position and elapsed time 1. (P2.1 A) What is your average speed if you run 140
More informationClicker Question. A tractor driving at a constant speed pulls a sled loaded with firewood. There is friction between the sled and the road.
A tractor driving at a constant speed pulls a sled loaded with firewood. There is friction between the sled and the road. A. positive. B. negative. C. zero. Clicker Question The total work done on the
More informationPhysics 201 Homework 5
Physics 201 Homework 5 Feb 6, 2013 1. The (nonconservative) force propelling a 1500kilogram car up a mountain 1.21 10 6 joules road does 4.70 10 6 joules of work on the car. The car starts from rest
More informationSupplemental 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?
More informationAP physics C Web Review Ch 6 Momentum
Name: Class: _ Date: _ AP physics C Web Review Ch 6 Momentum Please do not write on my tests Multiple Choice Identify the choice that best completes the statement or answers the question. 1. The dimensional
More informationPhysics Midterm Review. MultipleChoice Questions
Physics Midterm Review MultipleChoice Questions 1. A train moves at a constant velocity of 90 km/h. How far will it move in 0.25 h? A. 10 km B. 22.5 km C. 25 km D. 45 km E. 50 km 2. A bicyclist moves
More informationSHORT ANSWER. Write the word or phrase that best completes each statement or answers the question.
Exam Name SHORT ANSWER. Write the word or phrase that best completes each statement or answers the question. 1) A person on a sled coasts down a hill and then goes over a slight rise with speed 2.7 m/s.
More informationPHY231 Section 1, Form B March 22, 2012
1. A car enters a horizontal, curved roadbed of radius 50 m. The coefficient of static friction between the tires and the roadbed is 0.20. What is the maximum speed with which the car can safely negotiate
More informationMomentum and Energy. Ron Robertson
Momentum and Energy Ron Robertson Momentum Momentum is inertia in motion. Momentum = mass x velocity Unit kg meters/second Momentum is changed by force. The amount of momentum change is also affected by
More informationMidYear Review (2) (3) (4) (1) 1 m/s (3) 0.5 m/s (2) 2 m/s (4) 0 m/s
1. A blinking light of constant period is situated on a lab cart. Which diagram best represents a photograph of the light as the cart moves with constant velocity? (1) 6. The graph below represents the
More informationWork, Energy and Power Practice Test 1
Name: ate: 1. How much work is required to lift a 2kilogram mass to a height of 10 meters?. 5 joules. 20 joules. 100 joules. 200 joules 5. ar and car of equal mass travel up a hill. ar moves up the hill
More informationPhysics: Principles and Applications, 6e Giancoli Chapter 4 Dynamics: Newton's Laws of Motion
Physics: Principles and Applications, 6e Giancoli Chapter 4 Dynamics: Newton's Laws of Motion Conceptual Questions 1) Which of Newton's laws best explains why motorists should buckleup? A) the first law
More informationExam 2 is at 7 pm tomorrow Conflict is at 5:15 pm in 151 Loomis
* By request, but I m not vouching for these since I didn t write them Exam 2 is at 7 pm tomorrow Conflict is at 5:15 pm in 151 Loomis There are extra office hours today & tomorrow Lots of practice exams
More informationUnits DEMO spring scales masses
Dynamics the study of the causes and changes of motion Force Force Categories ContactField 4 fundamental Force Types 1 Gravity 2 Weak Nuclear Force 3 Electromagnetic 4 Strong Nuclear Force Units DEMO spring
More informationPhysics 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
More informationWorkEnergy Bar Charts
Name: WorkEnergy Bar Charts Read from Lesson 2 of the Work, Energy and Power chapter at The Physics Classroom: http://www.physicsclassroom.com/class/energy/u5l2c.html MOP Connection: Work and Energy:
More information1. Newton s Laws of Motion and their Applications Tutorial 1
1. Newton s Laws of Motion and their Applications Tutorial 1 1.1 On a planet far, far away, an astronaut picks up a rock. The rock has a mass of 5.00 kg, and on this particular planet its weight is 40.0
More informationC 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
More informationPHYSICS 111 HOMEWORK SOLUTION #8. March 24, 2013
PHYSICS 111 HOMEWORK SOLUTION #8 March 24, 2013 0.1 A particle of mass m moves with momentum of magnitude p. a) Show that the kinetic energy of the particle is: K = p2 2m (Do this on paper. Your instructor
More informationcharge is detonated, causing the smaller glider with mass M, to move off to the right at 5 m/s. What is the
This test covers momentum, impulse, conservation of momentum, elastic collisions, inelastic collisions, perfectly inelastic collisions, 2D collisions, and centerofmass, with some problems requiring
More informationWork and Direction. Work and Direction. Work and Direction. Work and Direction
Calculate the net gravitational force on the shaded ball. Be sure to include the magnitude and direction. Each ball has a mass of 20,000 kg. (0.79N, 22.5 o N of E) Chapter Six Work = Force X distance W
More informationElastic and Inelastic Collisions
Elastic and Inelastic Collisions Different kinds of collisions produce different results. Sometimes the objects stick together. Sometimes the objects bounce apart. What is the difference between these
More informationTennessee 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 Fgrade. Other instructions will be given in the Hall. MULTIPLE CHOICE.
More informationChapter 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
More informationChapter 4. Forces and Newton s Laws of Motion. continued
Chapter 4 Forces and Newton s Laws of Motion continued Clicker Question 4.3 A mass at rest on a ramp. How does the friction between the mass and the table know how much force will EXACTLY balance the gravity
More informationChapter 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
More informationWork, Energy and Power
Work, Energy and Power In this section of the Transport unit, we will look at the energy changes that take place when a force acts upon an object. Energy can t be created or destroyed, it can only be changed
More informationPhysics 201 Fall 2009 Exam 2 October 27, 2009
Physics 201 Fall 2009 Exam 2 October 27, 2009 Section #: TA: 1. A mass m is traveling at an initial speed v 0 = 25.0 m/s. It is brought to rest in a distance of 62.5 m by a force of 15.0 N. The mass is
More informationCHAPTER 6 WORK AND ENERGY
CHAPTER 6 WORK AND ENERGY CONCEPTUAL QUESTIONS. REASONING AND SOLUTION The work done by F in moving the box through a displacement s is W = ( F cos 0 ) s= Fs. The work done by F is W = ( F cos θ). s From
More informationMULTIPLE 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
More information2.1 Force and Motion Kinematics looks at velocity and acceleration without reference to the cause of the acceleration.
2.1 Force and Motion Kinematics looks at velocity and acceleration without reference to the cause of the acceleration. Dynamics looks at the cause of acceleration: an unbalanced force. Isaac Newton was
More informationPhysics term 1 reviewsheet
Name: ate: 1. The length of line shown is closest to one. millimeter. centimeter. meter. kilometer 5. The diagram shown represents a rectangle composed of squares with sides one meter long. What is the
More informationPhysics 1401  Exam 2 Chapter 5NNew
Physics 1401  Exam 2 Chapter 5NNew 2. The second hand on a watch has a length of 4.50 mm and makes one revolution in 60.00 s. What is the speed of the end of the second hand as it moves in uniform circular
More informationMULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
Exam Name MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) The following four forces act on a 4.00 kg object: 1) F 1 = 300 N east F 2 = 700 N north
More informationChapter 8: Conservation of Energy
Chapter 8: Conservation of Energy This chapter actually completes the argument established in the previous chapter and outlines the standing concepts of energy and conservative rules of total energy. I
More informationQ1. (a) State the difference between vector and scalar quantities (1)
Q1. (a) State the difference between vector and scalar quantities....... (1) (b) State one example of a vector quantity (other than force) and one example of a scalar quantity. vector quantity... scalar
More informationPhys 111 Fall P111 Syllabus
Phys 111 Fall 2012 Course structure Five sections lecture time 150 minutes per week Textbook Physics by James S. Walker fourth edition (Pearson) Clickers recommended Coursework Complete assignments from
More informationCurso20122013 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.
More informationReview Chapters 2, 3, 4, 5
Review Chapters 2, 3, 4, 5 4) The gain in speed each second for a freelyfalling 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
More informationChapter 9. is gradually increased, does the center of mass shift toward or away from that particle or does it remain stationary.
Chapter 9 9.2 Figure 937 shows a three particle system with masses m 1 3.0 kg, m 2 4.0 kg, and m 3 8.0 kg. The scales are set by x s 2.0 m and y s 2.0 m. What are (a) the x coordinate and (b) the y coordinate
More informationCenter of Mass/Momentum
Center of Mass/Momentum 1. 2. An Lshaped piece, represented by the shaded area on the figure, is cut from a metal plate of uniform thickness. The point that corresponds to the center of mass of the Lshaped
More informationWORK DONE BY A CONSTANT FORCE
WORK DONE BY A CONSTANT FORCE The definition of work, W, when a constant force (F) is in the direction of displacement (d) is W = Fd SI unit is the Newtonmeter (Nm) = Joule, J If you exert a force of
More informationChapter 4 Dynamics: Newton s Laws of Motion
Chapter 4 Dynamics: Newton s Laws of Motion Units of Chapter 4 Force Newton s First Law of Motion Mass Newton s Second Law of Motion Newton s Third Law of Motion Weight the Force of Gravity; and the Normal
More informationOur Dynamic Universe
North Berwick High School Department of Physics Higher Physics Unit 1 Section 3 Our Dynamic Universe Collisions and Explosions Section 3 Collisions and Explosions Note Making Make a dictionary with the
More informationName 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
More informationANSWER KEY. Reviewing Physics: The Physical Setting THIRD EDITION. Amsco School Publications, Inc. 315 Hudson Street / New York, N.Y.
NSWER KEY Reviewing Physics: The Physical Setting THIRD EDITION msco School Publications, Inc. 315 Hudson Street / New York, N.Y. 10013 N 7310 CD Manufactured in the United States of merica 1345678910
More informationWORKSHEET: 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
More informationKE =? v o. Page 1 of 12
Page 1 of 12 CTEnergy1. 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
More information1 of 9 10/27/2009 7:46 PM
1 of 9 10/27/2009 7:46 PM Chapter 11 Homework Due: 9:00am on Tuesday, October 27, 2009 Note: To understand how points are awarded, read your instructor's Grading Policy [Return to Standard Assignment View]
More informationChapter 5 Newton s Laws of Motion
Chapter 5 Newton s Laws of Motion Sir Isaac Newton (1642 1727) Developed a picture of the universe as a subtle, elaborate clockwork slowly unwinding according to welldefined rules. The book Philosophiae
More informationPhysics Honors Page 1
1. An ideal standard of measurement should be. variable, but not accessible variable and accessible accessible, but not variable neither variable nor accessible 2. The approximate height of a 12ounce
More informationSprings. Spring can be used to apply forces. Springs can store energy. These can be done by either compression, stretching, or torsion.
WorkEnergy Part 2 Springs Spring can be used to apply forces Springs can store energy These can be done by either compression, stretching, or torsion. Springs Ideal, or linear springs follow a rule called:
More informationChapter 7 Momentum and Impulse
Chapter 7 Momentum and Impulse Collisions! How can we describe the change in velocities of colliding football players, or balls colliding with bats?! How does a strong force applied for a very short time
More informationAP Physics. Chapter 9 Review. Momentum et. al.
AP Physics Chapter 9 Review Moentu et. al. 1. A 2000kg truck traveling at a speed of 3.0 akes a 90 turn in a tie of 4.0 onds and eerges fro this turn with a speed of 4.0. What is the agnitude of the average
More informationChapter 4 Dynamics: Newton s Laws of Motion. Copyright 2009 Pearson Education, Inc.
Chapter 4 Dynamics: Newton s Laws of Motion Force Units of Chapter 4 Newton s First Law of Motion Mass Newton s Second Law of Motion Newton s Third Law of Motion Weight the Force of Gravity; and the Normal
More informationExam Review Tuesday, September 17, Chapter 2: Kinematics in One Dimension
Exam Review Tuesday, September 17, 2013 10:00 PM Chapter 2: Kinematics in One Dimension Example: A juggler throws a ball straight up with an initial speed of 10 m/s. With what speed would she need to throw
More information356 CHAPTER 12 Bob Daemmrich
Standard 7.3.17: Investigate that an unbalanced force, acting on an object, changes its speed or path of motion or both, and know that if the force always acts toward the same center as the object moves,
More informationPhysics 271 FINAL EXAMSOLUTIONS Friday Dec 23, 2005 Prof. Amitabh Lath
Physics 271 FINAL EXAMSOLUTIONS Friday Dec 23, 2005 Prof. Amitabh Lath 1. The exam will last from 8:00 am to 11:00 am. Use a # 2 pencil to make entries on the answer sheet. Enter the following id information
More informationInstructor Now pick your pencils up and get this important equation in your notes.
Physics 605 Mechanical Energy (Read objectives on screen.) No, I haven t been playing with this toy the whole time you ve been gone, but it is kind of hypnotizing, isn t it? So where were we? Oh yes, we
More informationPHYS 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
More informationConservative vs. Nonconservative forces Gravitational Potential Energy. Work done by nonconservative forces and changes in mechanical energy
Next topic Conservative vs. Nonconservative forces Gravitational Potential Energy Mechanical Energy Conservation of Mechanical energy Work done by nonconservative forces and changes in mechanical energy
More informationF13HPhysQ5 Practice
Name: Class: Date: ID: A F13HPhysQ5 Practice Multiple Choice Identify the choice that best completes the statement or answers the question. 1. A vector is a quantity that has a. time and direction.
More informationLecture 07: Work and Kinetic Energy. Physics 2210 Fall Semester 2014
Lecture 07: Work and Kinetic Energy Physics 2210 Fall Semester 2014 Announcements Schedule next few weeks: 9/08 Unit 3 9/10 Unit 4 9/15 Unit 5 (guest lecturer) 9/17 Unit 6 (guest lecturer) 9/22 Unit 7,
More informationBHS Freshman Physics Review. Chapter 2 Linear Motion Physics is the oldest science (astronomy) and the foundation for every other science.
BHS Freshman Physics Review Chapter 2 Linear Motion Physics is the oldest science (astronomy) and the foundation for every other science. Galileo (15641642): 1 st true scientist and 1 st person to use
More informationPHYSICS 111 HOMEWORK#6 SOLUTION. February 22, 2013
PHYSICS 111 HOMEWORK#6 SOLUTION February 22, 2013 0.1 A block of mass m = 3.20 kg is pushed a distance d = 4.60 m along a frictionless, horizontal table by a constant applied force of magnitude F = 16.0
More informationExam Three Momentum Concept Questions
Exam Three Momentum Concept Questions Isolated Systems 4. A car accelerates from rest. In doing so the absolute value of the car's momentum changes by a certain amount and that of the Earth changes by:
More informationSection Review Answers. Chapter 12
Section Review Answers Chapter 12 Section 1 1. Answers may vary. Students should say in their own words that an object at rest remains at rest and an object in motion maintains its velocity unless it experiences
More informationAP1 WEP. Answer: E. The final velocities of the balls are given by v = 2gh.
1. Bowling Ball A is dropped from a point halfway up a cliff. A second identical bowling ball, B, is dropped simultaneously from the top of the cliff. Comparing the bowling balls at the instant they reach
More information8. 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
More information8. 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
More informationPhysics: 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
More informationYear 11 Physics Tutorial 84E1 Momentum and Impulse
Year 11 Physics Tutorial 84E1 Momentum and Impulse Module Topic 8.4 Moving About 8.4.E Momentum Name Date 1 What is the momentum of a bike rider of mass 64.0 kg with a velocity of 9.50 ms  1 north? 2
More informationCh 6 Forces. Question: 9 Problems: 3, 5, 13, 23, 29, 31, 37, 41, 45, 47, 55, 79
Ch 6 Forces Question: 9 Problems: 3, 5, 13, 23, 29, 31, 37, 41, 45, 47, 55, 79 Friction When is friction present in ordinary life?  car brakes  driving around a turn  walking  rubbing your hands together
More informationPhysics 2101, First Exam, Fall 2007
Physics 2101, First Exam, Fall 2007 September 4, 2007 Please turn OFF your cell phone and MP3 player! Write down your name and section number in the scantron form. Make sure to mark your answers in the
More informationSteps to Solving Newtons Laws Problems.
Mathematical Analysis With Newtons Laws similar to projectiles (x y) isolation Steps to Solving Newtons Laws Problems. 1) FBD 2) Axis 3) Components 4) Fnet (x) (y) 5) Subs 1 Visual Samples F 4 1) F 3 F
More informationEDUH 1017  SPORTS MECHANICS
4277(a) Semester 2, 2011 Page 1 of 9 THE UNIVERSITY OF SYDNEY EDUH 1017  SPORTS MECHANICS NOVEMBER 2011 Time allowed: TWO Hours Total marks: 90 MARKS INSTRUCTIONS All questions are to be answered. Use
More informationLab 8: Ballistic Pendulum
Lab 8: Ballistic Pendulum Equipment: Ballistic pendulum apparatus, 2 meter ruler, 30 cm ruler, blank paper, carbon paper, masking tape, scale. Caution In this experiment a steel ball is projected horizontally
More informationExplaining Motion:Forces
Explaining Motion:Forces Chapter Overview (Fall 2002) A. Newton s Laws of Motion B. Free Body Diagrams C. Analyzing the Forces and Resulting Motion D. Fundamental Forces E. Macroscopic Forces F. Application
More informationUnderstanding the motion of the Universe. Motion, Force, and Gravity
Understanding the motion of the Universe Motion, Force, and Gravity Laws of Motion Stationary objects do not begin moving on their own. In the same way, moving objects don t change their movement spontaneously.
More informationUnit 3 Work and Energy Suggested Time: 25 Hours
Unit 3 Work and Energy Suggested Time: 25 Hours PHYSICS 2204 CURRICULUM GUIDE 55 DYNAMICS Work and Energy Introduction When two or more objects are considered at once, a system is involved. To make sense
More informationSummary Notes. to avoid confusion it is better to write this formula in words. time
National 4/5 Physics Dynamics and Space Summary Notes The coloured boxes contain National 5 material. Section 1 Mechanics Average Speed Average speed is the distance travelled per unit time. distance (m)
More information1) The gure below shows the position of a particle (moving along a straight line) as a function of time. Which of the following statements is true?
Physics 2A, Sec C00: Mechanics  Winter 2011 Instructor: B. Grinstein Final Exam INSTRUCTIONS: Use a pencil #2 to ll your scantron. Write your code number and bubble it in under "EXAM NUMBER;" an entry
More informationProjectile Motion Vocabulary
Projectile Motion Vocabulary Term Displacement vector Definition Projectile trajectory range 1 Page What is a displacement vector? Displacement Vector of (10 m, 45 o ) 10 m θ = 45 o When you throw a ball
More information