A steel ball of mass 0.920 kg is fastened to a cord that is 34.0cm long and fixed at the far end. The ball is then released whenthe cord is horizontal, as shown in the figure. At the bottom ofits path, the ball strikes a 2.10 kg steel block initially at reston a frictionless surface. The collision is elastic. Find(a) the speed of the ball and (b)the speed of the block, both just after the collision.
