Volleyball players run forward before jumping up to serve the ball. (a) What effect does this approach run have on the ball's velocity compared with the exact same serve but with no approach run? (b) Ivan Zaytsev (ITA, Italy National Team) has one of the fastest serves on record which is 37.22 m/s. If Ivan's arm length is 1.14 m and his horizontal velocity the instant he hit the ball with an outstretched arm was 5.0 m/s, what was the angular velocity of his arm about the shoulder joint at the instant of contact with the ball during this record serve? Assume 37.22 m/s is purely horizontal and occurring at the instant of contact with the hand