A 767 kg car moving at 21 ms brakes to a stop the brakes


A 767 kg car moving at 21 m/s brakes to a stop. The brakes contain about 16 kg of iron that absorb the energy. What is increase in temperature of the brakes? Assume the speci?c heat of iron is 450 J/kg ·?C.

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Physics: A 767 kg car moving at 21 ms brakes to a stop the brakes
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