A tennis ball is released from rest at a height of above level ground
PHYSICS · Multi-part · A Level · Physics · Mechanics and materials · Mechanics and materials
Problem
A 0.15kg tennis ball is released from rest at a height of 3.2m above level ground. Ignore air resistance unless stated otherwise.
(a) Calculate the speed of the ball just before it strikes the ground.
(b) After striking the ground, the ball rebounds vertically and rises to a maximum height of 2.0m above the ground. Determine the percentage of mechanical energy lost during the collision with the ground.
(c) Suppose a light breeze exerts a constant upward force of 0.25N on the ball only during its descent. Determine the new impact speed at the ground, showing all steps in your calculation.