A tennis player receives a shot with the ball (0.0600 kg) traveling horizontally at 56.0 m/s and returns the shot with the ball traveling horizontally at 44.0 m/s in the opposite direction. What is the impulse delivered to the ball by the racket?

Answer 1

It equals the change in momentum. Since the direction changes 180 degrees, you add the initial and final momentum magnitudes.

Impulse = (0.06)(56 + 44)

Keep three significant figures.