Burning of fuel transfers 4 * 105 W of power into the engine of a 2000-kg vehicle.Suppose the engine has an efficiency of 25% and the vehicle reaches a maximum speed of 32.6 m/s.Assuming the vehicle starts from rest,how long does it take the vehicle to reach this speed?
A) 15 seconds
B) 5.0 seconds
C) 13 seconds
D) 9.2 seconds
E) 11 seconds
Correct Answer:
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