Physics Questions - Module #7

  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

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