Newton’s Third Law of Motion – Let us note important points

Newtons Third Law of Motion  – To every action, there is always an equal and opposite reaction.

Newton’s wording of the third law is so crisp and beautiful that it has become a part of common language. For the same reason perhaps, misconceptions about the third law abound. Let us note some important points about the third law, particularly in regard to the usage of the terms: action and reaction.

                The terms action and reaction in the third law mean nothing else but ‘force’. Using different terms for the same physical concept can sometimes be confusing. A simple and clear way of stating the third law is as follows:

                Forces always occur in pairs. Force on a body A by B is equal and opposite of the force on the body B by A.