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A steel ball of mass m1=3.0 kg is fastened to a cord that is L=1.4 m...

A steel ball of mass m1=3.0 kg is fastened to a cord that is L=1.4 m long and fixed at the far end. The ball is released when the cord is horizontal. At the bottom of its path, the ball strikes a m2=1.5 kg steel block initially at rest on a frictionless surface. The collision is elastic. Find the speed of the steel ball immediately before the collision (v-before) and the steel block immediately after the collision (v-after) in m/s. Select exactly 2 answers and be careful to select the appropriate ones.

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