The following formula is used to determine a radial acceleration using tangential velocity and radius.

## Radial Acceleration Definition

A radial acceleration is the rate of angular acceleration. It’s based on the tangential velocity and distance from the center of a rotating object.

## Example

The following is an example of how to calculate the radial acceleration of a rotating object.

- First, determine the tangential velocity of the rotating object. For this example we will say the object is moving at 20 m/s.
- Next, determine the radius of rotating. Using some form of measurement it’s found that the radius of rotation is 100m.
- Finally, calculate the radial acceleration of the object using the formula above. So, a = 20^2/100 = 4 rad/s^2

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