Question: In Figure, a 3.5 kg block is accelerated from rest by a compressed spring of spring constant 640 N/m. The block leaves the spring at

In Figure, a 3.5 kg block is accelerated from rest by a compressed spring of spring constant 640 N/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 = 7.8 m. What are??

(a) The increase in the thermal energy of the block-floor system,

(b) The maximum kinetic energy of the block, and?

- No friction D. (H4)

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