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
-
Derivation of the Friedmann Equations from the Newtonian
Derivation of the Friedmann Equations[1] from the Newtonian First Derivative of the Scale Factor a is the scale factor, not acceleration. Notice it is not expressed as a vector. The scale factor is scalar; It has no direction, only magnitude. It describes the instantaneous…