Angular velocity is usually measured in units of radians/second or degrees/second, but rotational velocity is most often seen as units of cycless/minute, or RPM, where "1 turn" = 1 cycle.

It's a subtle difference, but the difference is confusing, since one hardly ever sees cycles in an equation. The cycles are always just assumed.

**For dimensional analysis:**

1 cycle = 360 degrees

= 2 x pi radians

= 1 (full) rotation

1 cycle = 360 degrees

= 2 x pi radians

= 1 (full) rotation

Frequency, for example, is also measured in units of cycles/time, but again, you hardly ever see the cycles in equations for frequency.