A 5-kg block is held in place against the spring by a 3200-N horizontal external force. The external force is removed, and the block is projected with a velocity vo = 8.0 m/s when it separates from the spring, as shown in the figure. The block then travels to the higher level after passing through an intermediate valley. The track is frictionless until the block reaches the higher level where a frictional force stops the block in a distance d. Given that the height difference is h = 1.65 m, and uk = 0.65. (a) what was the compression of the spring before the block was released? (b) Find d.