Assuming the initial direction of motion before impact as negative and final direction of motion as positive.
m = mass of the ball being hit = 0.15 kg
v₀ = initial velocity of the ball before the impact = - 36 m/s
v = final velocity of the ball after impact = 45 m/s
t = time of impact = 0.0020 s
F = force Reggie exerted on the ball
Using Impulse-change in momentum equation
F t = m (v - v₀)
F (0.0020) = (0.15) (45 - (- 36))
F = 6075 N
