Thrown for a Curve
To throw a curve ball, a pitcher gives the ball an initial angular speed of 157.0 rad/s. When the catcher gloves the ball 0.795 s later, its angular speed has decreased (due to air resistance) to 154.7 rad/s.
(a) What is the ball’s angular acceleration, assuming it to be constant?
(b) How many revolutions does the ball make before being caught?