A Wheel Rotates About a Fixed Axis with an Initial

Multiple Choice

A wheel rotates about a fixed axis with an initial angular velocity of 20 rad/s. During a 5.0-s interval the angular velocity decreases to 10 rad/s. Assume that the angular acceleration is constant during the 5.0-s interval. How many radians does the wheel turn through during the 5.0-s interval?

A) 95 rad
B) 85 rad
C) 65 rad
D) 75 rad
E) 125 rad