A 2,000 Kg Car Is Traveling at 40

A 2,000 kg car is traveling at 40.0 m/s and then puts on the brakes and comes to a complete stop. The heat generated at the brakes due to stopping heats up the brakes. The mass of the brake system is 20.0 kg and it has a specific heat of 0.200 kcal/kg °C. What is the increase in the temperature of the brakes?

A) 66.6 °C
B) 75.4 °C
C) 87.5 °C
D) 95.6 °C
E) 117 °C

Correct Answer:

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