Question

Why does a gun recoil when a bullet is fired?

Answer 1

Newton's Third Law of motion:

1. According to Newton's Third Law of motion, every action has an equal and opposite reaction
2. When a gun fires a bullet, the gun puts a force on the bullet that propels it forward.
3. The bullet likewise exerts an equal and opposing force on the gun in the backward direction.

Therefore, when a bullet is fired from a gun, it recoils.