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.

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.