# Acceleration Definition

In physics, acceleration is defined as the velocity rate over a specific period of time. If a moving object is accelerated at a straight line, it means the variation occurs in an object's speed. The acceleration is directly proportional to the speed and direction; if one of the values changes, the rate of acceleration changes as well. For instance, even if a speed or velocity remains constant in a circular path, the acceleration still changes because the direction of an object is changing continuously. The acceleration is measured in the form of m/s2, where m=meter and s=seconds.

## Formula of Acceleration

The formula for acceleration is listed below:

Acceleration = change in velocity / time

Note:

To calculate angular acceleration, you can use our Angular Acceleration Calculator.

### Example

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

If a change in velocity is 200 m/s and a time is 10s, find out the acceleration.

Given data

change in velocity = 200 m/s
time = 10s

To Find

Acceleration = ?

Solution

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

Acceleration = change in velocity / time

Putting values in the formula:

Acceleration = 200 / 10 = 20 m/s2