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

• A. Newton's Third Law
• B. Newton's First Law
• C. Hooke's Law
• D. Ohm's Law

Answer: (A)

Think about forces as paired interactions that happen at the same moment. If one object pushes on another, the second object pushes back with the same strength in the opposite direction. These action-reaction forces always come in pairs, act on two different objects, and balance in magnitude but oppose in direction. That’s why you can jump by pushing backward on the ground: your foot pushes the ground backward, and the ground pushes you forward with an equal force, propelling you upward.

This idea highlights why the interaction matters on two bodies, not just one. It’s different from the law that describes an object’s tendency to keep moving or stay still unless a net external force acts on it, and it’s different from laws that describe springs or electrical relationships. So, the statement is about the force pairs arising from interactions, not about motion in general, not about how springs behave, and not about how electricity flows.