Action-Reaction Pairs

Definition

Action-reaction pairs are two forces that act on different objects as a result of their interaction with each other. These pairs always occur simultaneously and have equal magnitudes but opposite directions.

Analogy

Think of action-reaction pairs as a game of tug-of-war between two teams. Each team pulls on their respective end of the rope with equal strength but in opposite directions. The harder one team pulls (the action), the harder the opposing team pulls back (the reaction).

Related terms

Normal Force: The normal force is a contact force exerted by a surface perpendicular to it when another body presses against it.

Friction Force: Friction is a force that opposes relative motion between two surfaces in contact. It acts parallel to the surface and opposite to the direction of motion or attempted motion.

Applied Force: An applied force is a force that is exerted on an object by a person or another object. It can be used to move, stop, or change the direction of an object's motion.