You are playing catch with your friend in outer space (no gravity). You exert an average horizontal force of 10N on a 0.15 kg baseball over a 0.25 m displacement.
(a) What is the work done on the baseball?
(b) Assuming that the ball starts at rest, what is the velocity of the baseball as it leaves your hand?
(c) If your friend is 10 m away from you, what is the velocity of the ball as it arrives at his glove?
(d) Does your friend have to do positive or negative work to stop the ball?
(e) If your friend exerts an average horizontal force of 15 N, over what displacement must he exert this force to stop the ball?