Simplify the following text for a Grade 8 native English-speaking person.
Original: The SI unit of angular velocity is radians per second , although it may be measured in other units such as degrees per second , revolutions per second , revolutions per minute , degrees per hour , etc. .
Simplified: The SI unit of angular velocity is radians per second . But it may be measured in other units as well ( such as degrees per second , degrees per hour , etc ) .