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

question 64

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

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