Force Pair

Key Stage 4

A force pair is the two forces that occur when two objects interact.

The two forces in a force pair may be referred to as an action force and a reaction force.

When an object "A" exerts a force (action force) on object "B" then object "B" will exert a force (reaction force) on object "A". These are a force pair which will be equal in magnitude and opposite in direction to one another.