Average Velocity Definition

In physics, the object's average velocity is defined as the ratio between total displacements by the total time taken. Or in other words, it is the rate at which an object displaces its position from one point to another. The SI unit used to measure the average velocity is meters per second. However, you can also use other distance units like kilometers per hour (km/h) or miles per hour (m/h). Moreover, it is a vector quantity having both magnitude and direction.


Formula of Average Velocity

The formula used to derive average velocity is as follows:

\[\overrightarrow v \; = \;\frac{{\Delta x}}{{\Delta t}}\]


\(\overrightarrow v \) = Average velocity

∆x = Change in displacement

∆t = Change in time


If you want to calculate average velocity, you can use our Average Velocity Calculator.


For a more precise understanding, let us have an example below:

Suppose a sports car covers a 1000 m distance to the north at a time of 20s, and then find out the average velocity of an object.

Given data

Displacement = 1000 m
Time = 20s

To Find

Average velocity = ?


To find out the average velocity, we will use the formula listed below:

\[\overrightarrow v \; = \;\frac{{\Delta x}}{{\Delta t}}\]

Putting values in the formula:

\(\overrightarrow v \) = 1000 / 20 = 50 m/s