# Formula for Velocity

If you are looking for the velocity formula in physics, this article has the needful, dished out for you. Read to know all about the same.

Omkar Phatak

*Velocity is the rate of displacement of the car, per unit time, in a particular direction.*

How is Velocity Different From Speed?

Speed is a scalar quantity, while velocity is a vector quantity. That is, when I talk about the speed of a car, I don't worry about which direction it's going in. I only want to know the numerical measure of distance covered in unit time. On the other hand, while specifying velocity, I specify the direction.

Formula

The average velocity formula (in case ΔX is the displacement vector and ΔT is the time interval of displacement), is the following:

**Velocity (V) = Displacement/Time = ΔX/ΔT****Instantaneous Velocity = dX/dt**

Units

Velocity is measured in Kilometers/hour. Depending on the units used for distance and time, you can have various units. In SI units, it is measured in meters per second, with the distance covered, measured in meters, and time in seconds.