The 5-kg ball is cast on the alley with a backspin of = 10 rad/s, and the velocity of i...

The 5-kg ball is cast on the alley with a backspin of = 10 rad/s, and the velocity of its center of mass O is = 5 m/s. Determine the time for the ball to stop back spinning, and the' velocity of its center of mass at this instant. The coefficient of kinetic friction between the ball and the alley is = 0.08.