Question: A 3.6kg block is accelerated from rest by a compressed spring of spring constant 680N/m. The block leaves the spring at the spring's relaxed length

A 3.6kg block is accelerated from rest by a compressed spring of spring constant 680N/m. The block leaves the spring at the spring's relaxed length and then travels over a horizontal floor with a coefficient of kinetic friction k=0.25. The frictional force stops the block in distance D=7.8m. What are (a) the increase in the thermal energy of the block-floor system, (b) the maximum kinetic energy of the block, and (c) the original compression distance of the spring

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