# Velocity and angular acceleration

1. Nov 18, 2006

Is this true?

$$\vec \omega \times r = \vec v$$

2. Nov 18, 2006

### neutrino

That's actually meaningless.

This is true:$$\vec {\omega} \times \vec{r} = \vec {v}$$

(with respect to fixed origin)

Assuming omega is the angular velocity, r position vector, and v, the tangential velocity.