A bioengineer interested in the energy requirements of sports determines from videotape th...

A bioengineer interested in the energy requirements of sports determines from videotape that when the athlete begins his motion to throw the 7.25-kg shot (Fig. a), the shot is stationary and 1.50 m above the ground. At the instant the athlete releases it (Fig. b). the shot is 2.10 m above the ground. The shot reaches a maximum height of 4.60 m above the ground and travels a horizontal distance of 18.66 m front the point where it was released. How much work does the athlete do on the shot from the beginning of his motion to the instant he releases it?