A dentists drill starts from rest. After 3.20 s of constant angular acceleration, it turns at a

Question:

A dentist’s drill starts from rest. After 3.20 s of constant angular acceleration, it turns at a rate of 2.51 + 104 rev/min.
(a) Find the drill’s angular acceleration.
(b) Determine the angle (in radians) through which the drill rotates during this period.