What is a force pair and how does it affect the motion of objects?

A force pair is a pair of equal and opposite forces acting on two interacting objects. According to Newton's third law of motion, for every action, there is an equal and opposite reaction. This means that when one object exerts a force on another object, the second object exerts an equal and opposite force back on the first object. These force pairs affect the motion of objects by causing them to move in opposite directions or to remain at rest if the forces are balanced.