Action-Reaction Principle

The Action-Reaction Principle, also known as Newton’s third law, states that for every force exerted by one object on another, there is a corresponding equal and opposite force exerted back on the first object. In simple terms, if you push against something, it pushes back with the same strength. This means forces come in pairs and always occur together. For example, when you walk, your foot pushes against the ground, and the ground pushes back, helping you move forward. This principle explains how interactions between objects generate motion and forces in the physical world.