A volleyball is spiked so that its incoming velocity of+4.0m/s is changed to an outgoing velocity of -21 m/s. The mass ofthe volleyball is 0.35 kg.
a) what is the change in velocity of the ball?
b) what is the change in momentum of the ball?
c) what impulse does the player apply to the ball?
d) If the contact time of the spike is 0.1 seconds, what is theforce applied on the ball by the player's hand?