A bullet of mass 50 g is fired form a stationary rifel into a wooden block of mass 1.95 kg placed on a horizontal wooden surface . on stricking, the bullet is embedded into the block and both together cover a distance of 200 m in a stright path before comeing to rest . given the coefficient of friction between the block and the surface is 0.2 and mass of the rifel form which the bullet is triggered is 14 kg, find magnitude of the velocity of the recoil of the rifel. ( neglat the rasistance of air on the bullet )

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