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- 1. Multiple ChoiceA biker with a mass of 75 kg moves along the path with a constant velocity of 5 m/s. What is the biker's momentum?25 m/s375 m/s25 kg m/s375 kg m/s
- 2. Multiple ChoiceA runner has a momentum of 670 kg m/s and is travelling at a velocity of 9 m/s. What is his mass?6030 kg0.0134 kg74.4 kg80 kg
- 3. Multiple Choice
The units for Impulse are
N/s
N·s
N
m/s
- 4. Multiple Choice
A boy kicks a football with a force of 20 N, the time the force acts for is 0.3 s.
Calculate the impulse on the ball.
1 N·s
6 N·s
66 N·s
None of these
- 5. Multiple ChoiceThe purpose of crumble zones on a car is todecrease time of impact.increase force of impact.increase the time of impact.decrease the impulse during impact.
- 6. Multiple ChoiceThe difference between a car hitting a wall vs. a car hitting a hay stack isthe Impulse on the car hitting the wall is greaterthe change in momentum of the car hitting the wall is greaterthe force on the car hitting the hay stack is greaterthe collision time of the car hitting the hay stack is greater
- 7. Multiple ChoiceThe impulse-momentum theorem states thatthe impulse on an object is equal to the change in momentum it causesthe force on a moving object is equal to the magnitude of the impulse.the impulse on an object is greater than the change in momentum it causesthe impulse on an object is less than the change in momentum it causes
- 8. Multiple Choice
A constant force of 4.5 N acts on a 7.2-kg object for 10.0 s. What is the change in the object's momentum?
45 kg m/s
72 kg m/s
32.4 kg m/s
0.45 kg m/s
- 9. Multiple Choicecan a bullet have the same momentum a truck?yesno
- 10. Multiple Choice
The momentum of an object depends upon the object's ___________&_____________.
size and shape
mass and speed
mass and veloctiy
mass and energy
- 11. Multiple Choice
_________________ causes and is equal to a change in momentum
Impulse
Force
Joule
Watt
- 12. Multiple Choice
Determine the momentum of 1,000-kg car moving northward at 20 m/s.
20,000 N
20,000 Joules
20,000 Kg * m/s
20,000 kg * m/s north
- 13. Multiple Choice
When the speed of an object is doubled, its momentum...
remains unchanged in accord with the conservation of momentum.
doubles.
quadruples.
decreases.
- 14. Multiple ChoiceA 2 kg cart has a momentum of 16 kg m/s. What is its velocity?8 m/s32 m/s0.125 m/s18 m/s
- 15. Multiple ChoiceThe total momentum before a collision is _________ the total momentum after a collision.equal toless thanmore thanIt depends on the type of collision
- 16. Multiple Choice
When is momentum conserved in a collision?
When the collision is inelastic.
When the collision is elastic.
When the collision is inelastic OR elastic but never an explosion.
All collisions.
- 17. Multiple Choice
Compared to the total momentum of the clay and the block before the collision the momentum of the clay-block system after the collision is
Less
Greater
The Same
Cannot be determined
- 18. Multiple Choice
The collision shown demonstrates what type of collision?
Elastic
Inelastic
Dynamic
Momentum
- 19. Multiple Choice
Two figure skaters come together and push off of each other on a frictionless surface of ice. Based on this fact and the picture, what type of collision is this?
Elastic
Inelastic
Romance
Violent
- 20. Multiple Choice
Two figure skaters come together and push off of each other on a frictionless surface of ice. Based on this and the picture, which of these is conserved: momentum, mechanical energy, or kinetic energy?
Momentum
Momentum and Mechanical Energy
Momentum and Kinetic Energy
Momentum, Mechanical Energy, and Kinetic Energy
- Answer choicesTagsAnswer choicesTags