Name: ________________________________________ Block: _____ Date: _____/_____/_____
CONCEPTS OF PHYSICS
Chapter 7 Study Guide: Momentum
Multiple Choice
Identify the choice that best completes the statement or answers the question. Write the letter of your response on the line
provided.
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1. Which of the following is most closely related to mass?
a. inertia in motion
c. momentum
b. inertia
d. change in momentum
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2. Which of the following is most closely related to momentum?
a. inertia in motion
c. impulse
b. inertia
d. mass time acceleration
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3. Which has the most momentum?
a. 10 kg at 5 m/s
b. 20 kg at 2 m/s
c. 100 kg at rest
d. 5 kg at 50 m/s
4. Which has the most mass?
a. 10 kg at 5 m/s
b. 20 kg at 2 m/s
c. 100 kg at rest
d. 5 kg at 50 m/s
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5. When the force of impact is extended over a longer period of time, _____.
a. the impulse decreases
c. the momentum increases
b. the impulse increases
d. the collision is inelastic
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6. Impulse _____.
a. is the change in momentum
b. equals force multiplied by time
c. is measured in Newton-seconds
d. all of the above
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7. Given a constant force, tripling the duration of impact will also _____.
a. triple the force
c. triple the mass
b. triple the impulse
d. reduce the velocity by to two-thirds
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8. Given a constant force, tripling the duration of impact will also _____.
a. triple the force
c. triple the mass
b. triple the change in momentum
d. reduce the mass
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9. You experience an impulse every time you _____.
a. catch a ball
c. catch, then throw a ball
b. throw a ball
d. all of the above
____ 10. Which of the following situations most closely resembles an inelastic collision?
a. a tennis racquet striking a tennis ball
c. a player kicking a soccer ball
b. a baseball being struck by a bat
d. a linebacker tackling a running back
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Name: ________________________________________ Block: _____ Date: _____/_____/_____
CONCEPTS OF PHYSICS
Numeric Response
Respond to each of the following problems in the space provided. Make sure your numerical responses include both a
number and a unit.
11. A bowling ball has a mass of 7 kg and a velocity of 3 m/s.
(A) What is the ball’s momentum?
(B) Calculate the force needed to stop the ball in 1.0 s.
.
12. An 80 kg hockey player skates at 6 m/s.
(A) Calculate the momentum of the hockey player.
(B) If the hockey player experiences an inelastic collision with another player of the same mass, how fast
does the pair move off together?
.
13. A cue ball with a mass of 0.25 kg rolling at 1.0 m/s collides with the 8-ball and stops. If the mass of the 8ball is 0.2 kg, how fast does it move away from the cue ball?
.
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Name: ________________________________________ Block: _____ Date: _____/_____/_____
CONCEPTS OF PHYSICS
Short Answer
Respond to each of the following items using complete sentences and appropriate grammar. Be sure to address all parts
of each problem. Use additional paper if necessary.
14. Describe the difference between momentum and impulse in terms of mathematical products. What
relationship exists between these two quantities?
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15. Explain why an impulse is greater when bouncing occurs.
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16. Explain why the Pelton Wheel creates a greater impulse than the flat paddle wheel.
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17. What is the difference between an elastic and an inelastic collision? Give an example of each.
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