A baseball has mass 0.145 kg.
a) If the velocity of a pitched ball has a magnitude of 50.0 m/s and the batted ball's velocity is 60.0 m/s in the opposite direction, find the magnitude of the change in momentum of the ball.
b) Find the magnitude of the impulse applied to it by the bat.
c) If the ball remains in contact with the bat for 3.00 ms, find the magnitude of the average force applied by the bat.