You know Newton’s Third Law of Classical Mechanics, “To every action, there is always an opposed equal reaction.”
Or, perhaps you have heard it paraphrased as, “for every action, there is an equal and opposite reaction.”
Do you know why you know Newton’s Third Law of Classical Mechanics?
It’s not because you took physics in high school or college (although that may also be the case).
It’s because you’re a recreational or competitive shooter.
Recoil is the shooting-world corollary to Newton’s Third Law.
One action is the forward motion...