Rotation with Constant Angular Acceleration (Problem 43)

A circular disk of radius 10 cm has a constant angular acceleration of $1.0\text{rad}\text{/}{\text{s}}^2$; at $t=0$ its angular velocity is 2.0 rad/s. (a) Determine the disk’s angular velocity at $t=5.0\text{s}$. (b) What is the angle it has rotated through during this time? (c) What is the tangential acceleration of a point on the disk at $t=5.0\text{s}?$ Select the answer to part (a).