When a gun is fired, according to Newton’s Third Law of Motion, the expelled bullet experiences a forward force (action) due to expanding gases in the gunpowder combustion. Simultaneously, the gun experiences an equal but opposite backward force (reaction). This recoil is the gun’s response to the bullet being propelled forward. Newton’s law emphasizes that for every action, there is an equal and opposite reaction. The discharge of a bullet is a clear illustration of this law, where the force that propels the bullet forward is balanced by an equal force pushing the gun backward.