# Definition:Force

## Definition

A force is an influence which causes a body to undergo a change in velocity.

Force is a vector quantity.

### Symbol

$f$ or $\mathbf F$

The usual symbols used to denote the force on a body are $f$ or $\mathbf F$.

Its $\LaTeX$ code is f .

Its $\LaTeX$ code is \mathbf F .

### Dimension

The dimension of measurement of force is $\mathsf {M L T}^{-2}$.

This arises from Newton's Second Law of Motion and its definition as a mass (of dimension $\mathsf M$) multiplied by an acceleration (of dimension $\mathsf {L T}^{-2}$).

### Units

The SI unit of measurement of force is the newton.

The CGS unit of measurement of force is the dyne.

The FPS unit of measurement of force is the poundal.

## Also known as

Some writers and thinkers subdivide the idea of a force into a push or a pull, but such a dichotomy can serve to confuse the fact that they are in fact both forces.

Some treatments of physics and applied mathematics refer to a force as an action, and refer to the opposite force as the reaction to that action.

## Also see

• Results about force can be found here.

## Linguistic Note

The word force is derived from the Latin word fors meaning strength.