Constant acceleration (rotation)

[wisdominican]

Starting from rest, a disk rotates about its central axis with constant angular acceleration. In 5.0sec, it rotates 25rad. During that time, what are the magnitudes of A) angular acceleration, b)average angular velocity.

 

[Päällikkö]

https://www.physicsforums.com/showthread.php?t=8128
https://www.physicsforums.com/showthread.php?t=88596

https://www.physicsforums.com/showthread.php?t=4825

$$\alpha _{avg} = \frac{\Delta \omega}{\Delta t},\ v = \omega r$$