The term velocity is really just going to refer to something's positing as a function of time. So an angular velocity is just measuring how much its angle is changing over time.
If the object is going around in a circle, ("swung around" implies that it is attached to a rope of some kind going in a circle), it will pass through 360 degrees, or 2
If it is swung around 50 times in 1 minute, its angular velocity can be calculated as:
Note that the mass given in this problem is irrelevant. Just because something has a different mass will not change how fast its angle is changing.