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# A problem from Transformation of Energy

“I can’t figure out how to solve this problem:

The total mass of a motorcycle and rider is 250kg. During braking, they are brought to rest from 16m/s in a time of 10s. What is the maximum amount of energy converted into heat by the brakes?

I don’t know whether to use WD = F x d or another set of formula?”

Heat =Change in KE =$\frac{1}{2}mv^{2}=\frac{1}{2}250\times 16^{2}=32000 J$