Newton's Third Law

Definition

Newton's Third Law states that for every action, there is an equal and opposite reaction. When one object exerts a force on another object, the second object exerts an equal but opposite force on the first.

Related terms

Action-Reaction Pair:

In Newton's Third Law, action-reaction pairs are two forces that are equal in magnitude but act in opposite directions.

Momentum Conservation:

Momentum conservation states that in a closed system where no external forces act, momentum remains constant before and after any interaction between objects.

Impulse-Momentum Principle: The impulse-momentum principle states that when a net external force acts on an object for some time interval, it causes a change in momentum of the object.