Newton’s Third Law of Motion
Newton noticed that forces always come in pairs as a result of the interaction between two bodies and that the two forces were always equal in size and opposite in direction.
In his third law Newton states:
If body A exerts a force on body B, then body B exerts a force on body A that is equal in size but opposite in direction.
Newton’s third law can be explained by the example of the space shuttle shown in the animation below: