# An Awesome Explanation of Angular Acceleration You Have to Read

What is angular acceleration? How is it measured? Why is acceleration the most important parameter of motion theory? Read on to find out.

ScienceStruck Staff

Last Updated: Jul 22, 2017

**Definition**: Angular acceleration (α) is the rate of change of angular velocity (ω) over time.

**Formula**: α = (ω

_{f}- ω

_{i})/t

**Unit**: radians/second

^{2}written as rad/s

^{2}