Definition:Velocity

Definition
The velocity of a body $M$ is defined as the first derivative of the displacement of $M$ from a given point of reference time:


 * $\mathbf v = \dfrac {\mathrm d \mathbf s} {\mathrm d t}$

Colloquially, it is described as the rate of change of position.

It is important to note that as displacement is a vector quantity, then it follows by definition of derivative of a vector that so is velocity.

Also see

 * Definition:Displacement
 * Definition:Position


 * Definition:Speed


 * Definition:Acceleration


 * Definition:Linear Momentum