A wad of sticky clay of mass m is hurled horizontally at a wooden block of mass M initially at rest on a horizontal surface. The clay sticks to the block. After impact, the block slides a distance d before coming to rest. If the coefficient of friction between the block and the surface is µ, what was the speed of the clay immediately before impact?

Question

anonymous · Answer

First, use the conservation of momentum,
mu =(M+m)v
then use that v in the work kinetic energy theorem.
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