jack measured that his racquet gives a squash ball 45.0J of kinetic energy when he hits it with a particilar shot.he also measures that it has 18.0J of kinetic energy after one bounce off the court wall.

Question

what percentage of its mechanical energy does the ball lose while it bounce off the court wall?

what happens to most of this lost energy?

describr an experiment that might allow you to verify your answer.

1. Divide the lost Kinetic Energy by the original Kinetic Energy
2. What do you think?
3. Hint: added heat increases temperature

Answer 1

60%