xck of mass m=5.20 kg is released frem rest from point 0 and slides an the frictioniess track shown in the figure below, (Let h,=5.52 m,
(a) Determine the block's speed at points (1i) and (C)
(b) Determine the net work done by the gravitatiẹnal force on the block as is moves from point (9 to point (9).