Question

1. a tennis ball is dropped from a height of 2 m and it rebounds 95 cm. use g=10 m/s^2, and the tennis ball weights .058 kg.

a) find the change of momentum when the ball is at a height of 1.5 m downward and at 0.5 m downward. which i got -3.14 kg m/s for the 1.5 m, and -0.18 kg m/s, and then what is the impulse exerted on the object during that change of momentum?

b) compute the speed of the object just before it hits the floor, and compute the speed of tbe object immediately after the collision

c) draw the momentum vs time graph when the ball is moving downwards.

d) find the impulse exerted by the floor on the object

e) how much energy did the object lose at impact?

Answer 1

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