The physics of gun recoil is a fascinating and complex interplay of forces and energy transformations that occur during the firing of a firearm. When a gun is discharged, the explosive force generated by the ignited gunpowder propels a projectile forward, but it also generates an equal and opposite force in the opposite direction—this is what we perceive as recoil.
Understanding the physics behind gun recoil involves delving into Newton’s third law of motion, which states that for every action, there is an equal and opposite reaction. In the context of firearms, this law comes into play as the expelled gases from the fired cartridge create a force that propels the bullet down the barrel, simultaneously generating a backward force that results in recoil.