A woman, driving a golf ball off of the tree, gives the ball a speed of 20.0m/s. The mass of the ball is 45g and the duration of the impact with the golf club is 6.0x10^-3s

a) What is the change in the momentum of the ball?
b) Determine the average force applied by the club.

a) momentum = m v = .045 kg * 20.0 m/s

b) f t = m v ... f = m v / t = (.045 kg * 20.0 m/s) / 6.0E-3 s Newtons