posted by Amelia on .
When serving a tennis ball, the player hits it when its velocity is zero (at the highest point of a vertical toss). The racket exerts a force of 560 N on the ball for 5.00 ms, giving it a final velocity of 45.0 m/s. Using these data, find the mass of the ball.
F = m a = (change in momentum/ change in time)
560 = m (45 - 0) / 5 *10^-3
560 = 45,000 m /5 = 9,000 m
m = .0622 Kg = 62.2 grams