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March 26, 2017

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A car's engine is only 12% efficient at converting chemical energy in gasoline into mechanical
energy. If it takes 1.8 x 104 N of force to keep the car moving at a constant speed of 21 m/s,
how much chemical energy would be needed to move the car a distance of 450 m at this speed?

  • Science - ,

    chemenergy=1.8E4*450m/.12

  • Science - ,

    6.7 x 10^7

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