Displacement is the vector counterpart of distance, having both magnitude and direction.
Velocity is therefore also a vector quantity.
The magnitude of velocity is known as the speed of a body. The average velocity or average speed of a moving body during a time period t may be computed by dividing the total displacement or total distance by t. Computation of the instantaneous velocity at a particular moment, however, usually requires the methods of the calculus. Listing from Electric Library , a pay service. Copyright 2001 Infonautics Corporation . All rights reserved.