remember, as with everything, neatness counts. Problem 1. A block of mass m = 5.00 kg is released from rest from point A and slides on the frictionless track shown on Fig. 1.Determine: (a) the block's speed at ponts B and C. (b) The work done by the gravitational force on the block as it moves from A to C. m B 5.00 m 3.20 m 2.00 m