(a) A 15.0 kg block Is released from rest at point A In the figure below. The track is frictionless except for the portion between points B and C, which has a length of 6.00 m. The block travels down the track, hits a spring of force constant 2,200 N/m, and compresses the spring 0.250 m from its equilibrium position before coming to rest momentarily. Determine the coefficient of kinetic friction between the block and the rough surface between points B and C. A 3.00 m B C 6.00 m 0.422 (b) What If? The spring now expands, forcing the block back to the left. Does the block reach point B? Yes O No If the block does reach point B, how far up the curved portion of the track does it reach, and if it does not, how far short of point B does the block come to a stop? (Enter your answer in m.) m