# radian per second squared

##### SI coherent derived unit whose name and symbol includes an SI coherent derived unit with a special name and symbol
Name Symbol Quantity Expressed in terms of SI base units
radian per second squared rad/s2 angular acceleration s‑2

### Definition

The radian per second squared, symbol rad/s2, is the SI coherent derived unit of angular acceleration.

A wheel of radius one metre, rolling along a surface with an angular acceleration of one radian per second squared, travels with a linear acceleration of one metre per second squared.