A block of mass 100 g slides on a rough horizontal surface.

Question:

A block of mass $100 \mathrm{~g}$ slides on a rough horizontal surface. If the speed of the block decreases from 10 $\mathrm{m} / \mathrm{s}$ to $5 \mathrm{~m} / \mathrm{s}$, find the thermal energy developed in the process.

Solution:

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