Starting from rest at t = 0 s, a wheel undergoes a constant angular acceleration. When t = 1.9 s, the angular velocity of the wheel is 6.2 rad/s. The acceleration continues until t = 15 s, when the acceleration abruptly changes to 0 rad/s2. Through what angle does the wheel rotate in the interval t = 0 s to t = 47 s? okay.....there are too many times here..what am i supposed to do for the acceleration after 25sec...to 46secs? i don't know what acceleration to to use to find the angular velocity from 25 to 46secs, to take the total velocity and find the angular displacement.