A 85.0 kg fullback is running at 3.86 m/s to the east and is stopped in 0.800 s by a head-on tackle by a tackler running due west.
A/ Calculate the original momentum of the fullback.
B/ Calculate the impulse exerted on the fullback.
C/ Calculate the impulse exerted on the tackler.
D/ Calculate the average force exerted on the tackler.