(7) A particle of mass 5.30 kg is released from rest at point A (the highest point) and slides on the frictionless track shown in the figure where ha = 5.95 m, ho = 3.09 m, and he = 2.20 m. A B he (7a) Determine the particle's speed at point B. Submit Answer Tries 0/10 (7b) Determine the net work done by the force of gravity in moving the particle from A to C. Submit Answer |Tries 0/10