The rotor of a jet engine is rotating at 9,500 revolutions per minute (rpm) when the fuel is shut off. The ensuing angular acceleration is a = -0.02w, where w is the angular velocity in radians per second (rad/s). (a) How long does it take the rotor to slow to 900 rpm? (b) How many revolutions does the rotor turn while decelerating to 900 rpm?

The rotor of a jet engine is rotating at 9,500 revolutions per minute (rpm) when the fuel is shut off. The ensuing angular acceleration is a = -0.02w, where w is the angular velocity in radians per second (rad/s). (a) How long does it take the rotor to slow to 900 rpm? (b) How many revolutions does the rotor turn while decelerating to 900 rpm?