Apiece of iron block moves across a rough horizontal surface before coming to rest. the mass of the block is 3.3 kg, and its initial speed is 3.2 m/s. how much does the block's temperature increase, if it absorbs 74% of its initial kinetic energy as internal energy? the specific heat of iron is 452 j/(kg · °c).
°c

Rise in temperature is given as

Explanation:

Initial kinetic energy of the block is given as

here we will have

m = 3.3 kg

v = 3.2 m/s

now we will have

now we will have

now we know that 74% of initial kinetic energy is absorbed as internal energy of the block

so the rise in temperature of the block is given as

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