In the same way, angular momentum is what changes when a rotational ... motion you see (well, you can't see the CD spinning). What happens is the direction of the angular velocity of the CD player ...

Background A decrease in dominant shoulder internal and total rotational range of motion (ROM) has been found in tennis players immediately after competitive play. This can become a risk factor for ...

there's no motion? I mean, kinda... it's all relative, right? Prepare to have your mind blown in this episode of Crash Course Physics where Shini delves into the world of Rotational Motion!