Question

A miracle car with a 100% efficient engine burns fuel having a 40-megajoules-per-liter energy content. If air drag and overall frictional forces at highway speeds totals 1000 N, what distance per liter can be achieved on the highway?
A) 30 km
B) 40 km
C) 50 km
D) more than 50 km
E) need more information

Answer

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