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Cortar

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stop. The brakes contain about 16 kg of iron

that absorb the energy.

What is increase in temperature of the

brakes? Assume the specific heat of iron is

450 J=kg ¢

± C. Answer in units of ±C.Q=mc(t1-t2)

Ok I have the mass of the brakes and the specific heat and I know you only have to solve for the change in temperature, so I all need is Q.

I know Q is measured in Joules and J=Newton x distance, but all I am given is the velocity of the car, nothing about time, distance, or Acceleration. So how do you figure the Q?