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A stationary block of mass 5 kg explodes into two pieces L and R that slide...

A stationary block of mass 5 kg explodes into two pieces L and R that slide across a frictionless floor. The left piece slides across the region with friction and stops, the right piece compresses a spring. Momentum is conserved during the explosion. Piece L has a mass of 2 kg and encounters a flat surface with coefficient of kinetic friction µL = 0.4 and slides to a stop in distance dL = 0.5 m. Piece R slides across the frictionless surface and compresses the spring of spring constant 120 N/m. How far does piece R compress the spring?

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