Kshi Sugawara (Haikyuu), vice captain of the boys volleyball team, is in spiking position when another player gives him a great set. With a speed of 1.02 m/s, the 0.300kg ball is at a height of 3m above the ground. Kshi Sugawara spikes the ball and exerts 10J of work. What was the ball's potential energy before it was spiked by Sugawara? What was the ball's total mechanical energy before it was spiked by Sugawara? What is the ball's speed when it strikes the ground on the opposing team's side of the net