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A 2000 Kg Car Is Traveling at 40 ^{\circ} CWhat Is the Increase in the Temperature of the Brakes

Question 24

Multiple Choice

A 2000 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 ^{\circ} C.What is the increase in the temperature of the brakes?


A) 66.6 ^{\circ} C
B) 75.4 ^{\circ} C
C) 87.5 ^{\circ} C
D) 95.6 ^{\circ} C
E) 117 ^{\circ} C

Correct Answer:

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