A copper block with a mass of 8.2 kg initially slides over a rough horizontal surface with a speed of 3.1 m/s. Friction slows the block to rest. While slowing to rest, 85.0% of the kinetic energy of the block is absorbed by the block itself as internal energy. What is the temperature increase of the block? (Celsius.)   What happens to the remaining energy? A. It vanishes from the universe.  B. It is absorbed by the horizontal surface on which the block slides.      C. It becomes chemical energy.  D. It is so minute that it doesn't factor into the equation.

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