A 150 g ball, travelling at 30 m/s, strikes the palm of a player’s hand and is stopped in 0.05 second. Find the force exerted by the ball on the hand.
Mass of ball = 150g = 0.15kg
Initial velocity, u = 30 m/s
Final velocity, v = 0m/s (as player stops the ball)
Time, t = 0.05s (as player stops ball in 0.05s)
Force, F = m x a
F = m x v-u/t
F = 0.15 x 0-30/0.05
F = 3 x -30
F = -90 N