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Physics 101 Practice Test 2
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Physics 101 Practice Test 2
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25 Questions

1. A car traveling at 60 km/hr passes a truck going 30 km/hr. If the truck has twice the mass of the car, which of the following is true?
2. ____ is the rate at which ____ is done.
3. When a car rounds a curve at high speed,
4. The gravitational potential energy of a body depends on its
5. A mass of 4 kg moving to the right with a momentum of 12 kg-m/s would have a speed of ____ m/s.
6. A skydiver weighing 500 newtons jumps from an airplane at a height of 2000 meters. At the start of the jump, the skydiver's kinetic energy is ____ joules.
7. Impulse has the same units as
8. If two objects of different mass have the same non-zero kinetic energy,
9. The formula for kinetic energy is KE = ____ .
10. If two speeding trucks have the same momentum,
11. If a moving object doubles its speed, how much kinetic energy will it have?
12. A swinging pendulum has ____ at the top (end) of its arc.
13. A 2-kg ball moving horizontally to the right at 3 m/s strikes a wall and rebounds, moving horizontally to the left at the same speed. What is the magnitude of the change in momentum of the ball?
14. A mass of 2 kg moving to the right with a momentum of 6 kg-m/s would have a speed of ____ m/s.
15. When using a jack as a lever to raise one end of a car off the ground, the jack handle is moved a relatively distance in order to lift the car a relatively ____ distance.
16. The total momentum before a collision is equal to the total momentum after the collision.
17. When a car rounds a curve at high speed,
18. The center of mass of an object
19. A freight car moving at 20 m/s to the right strikes a stationary freight car of the same mass. If the collision is inelastic,
20. If a collision between two bodies is elastic,
21. Case 1: A net force of 10 N acts on a mass of 1 kg for a time of 0.2 s.
Case 2: A net force of 20 N acts on a mass of 1 kg for a time of 0.1 s.
Both cases result in acceleration of the mass. In comparison, Case 1 and Case 2 will
22. A freight car moving at 20 m/s to the right strikes a stationary freight car of the same mass. If the collision is elastic,
23. The work done against gravity in moving a box with a weight of 20 newtons through a height of 5 meters is
24. When using a jack as a lever to raise one end of a car off the ground, you are applying a relatively ____ force to raise the car a relatively ____ distance for each push of the jack handle.
25. The work done against gravity in moving a box with a mass of 3 kilograms through a height of 5 meters is

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