# 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/s^{2}, where m=meter and s=seconds.

**Table of Contents**

## 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/s^{2}