According to Newton's 3rd Law of Motion, what occurs for every action?

Newton's Third Law of Motion states that for every action, there is an equal and opposite reaction. This principle is fundamental in understanding interactions between objects. When one object exerts a force on another, the second object exerts a force of equal magnitude and in the opposite direction back on the first object. This relationship explains a wide range of physical phenomena, from the way rockets propel themselves by expelling gas downwards, to how a person pushes against a wall and feels the wall pushing back.

This law emphasizes the interdependence of forces between interacting bodies, illustrating that forces come in pairs. Such understanding is crucial in fields such as physics, engineering, and even sports science, where analyzing forces can lead to improved outcomes in performance or safety.

The other options, while they may relate to motion and forces, do not accurately reflect the relationship defined by Newton's Third Law. They don't encapsulate the precise nature of action-reaction pairs, which is the essence of this fundamental principle in physics.