A Force is an influence that can change the motion of an object.

A Force is a push or pull upon an object resulting from the object’s interaction with another object.

Whenever there is an interaction between two objects, there is a force upon each of the objects. When the interaction ceases, the two objects no longer experience the force. Forces only exist as a result of an interaction.

Related: Interaction, Fundamental Interaction, Fundamental Force, Motion, Influence, Field, Forces & Fields