Physics Questions - Module #7
• Feel free to use the questions below to check (or improve) your understanding of the concepts in this physics module.

1. You accelerate. The speed of your car doubles. Which of the following items quadruples as a result?
1. momentum
2. potential energy
3. acceleration
4. kinetic energy
5. all of these
6. none of these

2. Two railroad cars move towards each other at 10 m/s. They collide and bounce backward at 20 m/s. This event violates conservation of
1. mass
2. acceleration
3. kinetic energy
4. potential energy
5. collisions
6. none of these
7. all of these

3. A certain car has momentum. It therefore must also have
1. acceleration
2. kinetic energy
3. force
4. potential energy
5. impulse
6. none of these
7. all of these

4. A 100 Newton force is used to push a table by 5 meters. The amount of work done on the table is
1. 5 J
2. 100 J
3. 0 J
4. 500 J
5. 1000 J

5. A meteor moving at 30 m/s collides with a twice-as-massive meteor and sticks to it. After the collision, the combined meteors have a kinetic energy that is ___ as much as the total kinetic energy before the collision.
1. the same
2. twice
3. one third
4. three quarters
5. two thirds
6. not enough information