A 60 g bullet is fired horizontally with a velocity
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A 2-oz bullet is fired horizontally with a velocity v1 = 1800 ft/sec into the 6-kg block of soft wood initially at rest on the horizontal surface. The bullet emerges from the block with the velocity v2 = 1200 ft/sec, and the block is observed to slide a distance of 8 ft before coming to rest. Determine the coefficient of kinetic friction μk between the block and the supporting surface.