Question

When a bullet is fired from a gun, the gun recoils
(a) write the action and reaction in this situation?
(b) A bullet is fired with a velocity 40m/s from a gun of mass 4kg, what will be the recoil velocity of the gun if the mass of the bullet is 0.2 kg?​

Answer 1

The gun recoil due to the reaction force applied by the shot to the gun. Forward movement of the shot is action and the Backward movement of the gun is reaction.