A rifle with a weight of 20 N fires a 4.0 g bullet with a speed of 240 m/s. (a) Find the recoil speed of the rifle.

A rifle with a weight of 20 N fires a 4.0 g bullet with a speed of 240 m/s.(a) Find the recoil speed of the rifle.1 m/s(b) If a 800 N man holds the rifle firmly against his shoulder, find the recoil speed of the man and rifle.2 m/s