A toy cannon uses a spring to project a 5.29-g soft rubber ball. The spring is originally compressed by 5.10 cm and has a force constant of 7.91Nm. When the cannon is fired, the ball moves 14.9 cm through the horizontal barrel of the cannon, and the barrel exerts a constant friction force of 0.0310 N on the ball.
(a) With what speed does the projectile leave the barrel of the cannon? m/s
(b) At what point does the ball have maximum speed? cm (from its original position)
(c) What is this maximum speed? m/s