A 0.200 kg ball is placed on a spring and the spring is compressed 0.0500m. The spring constant k=600.0 N/m.

A. Calculate the total mechanical energy of the ball when it is compressed.

B. Using the energy stored in the spring the ball is shot straight into the air. Calculate the velocity of the ball when it is 0.100 m above the original compressed position.

C. The ball reaches its maximum velocity when the spring has returned to equilibrium. Would this velocity be the same if the spring had been held horizontally? Why or why not?