A particle moves in a plane with constant radial velocity

. The angular velocity is constant and has magnitude

. When the particle is

from the origin, find the magnitude of (a) the velocity and (b) the acceleration.

So

where the first component is the radial velocity and the second component is the angular velocity.

So we want units in

(same units). So would I just change the

into

and take the magnitude?

If we have constant velocity (both radial and angular) wouldn't the magnitude of the acceleration be

?