Newton's Third Law of Motion

Definition

Newton's Third Law of Motion states that for every action, there is an equal and opposite reaction. This means that whenever an object exerts a force on another object, the second object exerts a force of equal magnitude in the opposite direction on the first object.

Related terms

Internal Forces: These are forces that act within an object or system. They do not cause a change in motion of the entire system but can affect its internal parts.

External Forces:

These are forces that act on an object or system from outside sources. They can cause a change in motion of the entire system.

Action-Reaction Pair:

This refers to the pair of forces described by Newton's Third Law. When one object exerts a force on another, these two forces are equal in magnitude and opposite in direction.