Wheel, starting from rest, rotates with a fix rotational acceleration of 2.50 rad/s2. During a certain 2.00 s interval, it turns through 80.0 rad.
(a) Determine how long is the wheel turning before the start of the 2.00 s interval?
s
(b) Determine the rotational velocity of the wheel at the start of the 2.00 s interval?
rad/s