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## Homework Statement

I'm working a problem concerning centrifugal acceleration and I've stumbled on something I don't quite understand:

## Homework Equations

**F**=mrω

^{2}where ω=rad/s

So the resulting units: kg * m*rad

^{2}/s

^{2}

## The Attempt at a Solution

I would expect acceleration to be in unit ms

^{-2}

What's up with these radians? What do they mean?