At a time t = 3.00s , a point on the rim of a wheel with a radius of 0.150m has a tangential speed of 45.0m/s as the wheel slows down with a tangential acceleration of constant magnitude 10.8m/s2 .

A. Calculate the wheel's constant angular acceleration.
B.Calculate the angular velocity at t = 3.00s .
C. Calculate the angular velocity at t=0.
D.Through what angle did the wheel turn between t=0 and t = 3.00s ?