During a 5.7 s time interval, a flywheel with a constant angular acceleration turns through 636 radians and acquires an angular velocity of 186 rad/s. (Assume the flywheel is rotating in the positive direction. Indicate the direction with the signs of your answers.)

(a)

What is the angular velocity (in rad/s) at the beginning of the 5.7 s?

rad/s

(b)

What is the angular acceleration of the flywheel (in rad/s²)?

rad/s²