“For every action, there is an equal and opposite reaction”. This law is called:

This principle is known as Newton’s Third Law of Motion. Simply stated: For every action, there is an equal and opposite reaction. As to how this works when two entities interact: If one thing pushes on another, the second thing will push back on the first with equal force but in the opposite direction. Examples of this principle: When a rocket lifts off into space by shooting gas backwards or when you push on a wall and the wall pushes back against your hand.