Multiple choice. Indicate the best answer.

1. A 1 kg object moving at 1 m/s has an elastic collision with a 2 kg object at rest. Which of the following statements is true after the collision?
   1. The total kinetic energy of both objects is equal to 0.5 J
   2. The total kinetic energy of both objects is greater than 0.5 J
   3. The total kinetic energy of both objects is less than 0.5 J
   4. More information is needed to determine the kinetic energy after the collision
2. A 0.1 kg ball of putty initially moving at 10 m/s strikes and sticks to a 5 kg bowling ball initially at rest. After the collision, the momentum of the bowling ball is
   1. less than 1 kg m/s
   2. equal to 1 kg m/s
   3. greater than 1 kg m/s
   4. more information is needed to determine the momentum after the collision
3. A 0.1 kg golf ball initially moving at 10 m/s strikes and bounces back off a 5 kg bowling ball initially at rest. The momentum of the bowling ball after the collision is
   1. less than 1 kg m/s
   2. equal to 1 kg m/s
   3. greater than 1 kg m/s
   4. more information is needed to determine the momentum after the collision
4. A fly encounters the windshield of a speeding car. Which experiences the greater change in momentum?
   1. The car
   2. The fly
   3. They are the same
   4. It depends on the speed of the car
5. Car A moving to the right has a perfectly inelastic collision with car B moving to the left. Immediately after the collision, the combined wreckage is seen to move to the left. From this we can determine:
   1. Car B was moving quicker than car A
   2. Car A was lighter than car B
   3. Car B had more momentum than car A
   4. Car A felt a greater force from the collision than car B