APFIVE Kinetic Energy and Thermal Energy Conversion
A 1500 kg car moving at 20 m/s applies brakes and comes to a stop. If 80% of the car’s initial energy is transferred to thermal energy in the brakes and 20% to the environment through air resistance, what is the temperature increase of the 10 kg brake system if its specific heat capacity is 500 J/(kg·°C)?
A
60°C
B
24°C
C
96°C
D
48°C
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