Which law states that for every action there is an equal and opposite reaction?

Which law states that for every action there is an equal and opposite reaction?

• A. Newton's First Law of Motion
• B. Newton's Third Law of Motion
• C. Newton's Second Law of Motion
• D. The Law of Conservation of Energy

Answer: (B)

Forces come in action-reaction pairs when two objects interact. The force one object exerts on the other has the exact same magnitude but opposite direction as the force the second object exerts back on the first. These forces act on different objects and happen at the same time, which is why you can feel a push back even as you push someone or something else. This is why the statement is correct: it captures the core idea that forces come in equal and opposite pairs during interactions, and it is embodied in Newton's Third Law. For contrast, the first law is about inertia, the second law links force to acceleration (F = ma), and the fourth option concerns energy conservation, not the paired forces during an interaction.

Forces come in action-reaction pairs when two objects interact. The force one object exerts on the other has the exact same magnitude but opposite direction as the force the second object exerts back on the first. These forces act on different objects and happen at the same time, which is why you can feel a push back even as you push someone or something else.

This is why the statement is correct: it captures the core idea that forces come in equal and opposite pairs during interactions, and it is embodied in Newton's Third Law. For contrast, the first law is about inertia, the second law links force to acceleration (F = ma), and the fourth option concerns energy conservation, not the paired forces during an interaction.