What is the loss of kinetic energy due to the collision

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A block of mass m = 12 kg has a speed of V and is behind a lock of mass M=40 kg that has a speed of .5 m/s. The surface is frictionless. The blocks collde and couple. After the collision, the blocks have a common speed of .9m/s. What is the loss of kinetic energy due to the collision?

Reference no: EM13339551

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