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Suppose a Miracle Car Has a 100% Efficient Engine and Burns

Question 28

Multiple Choice

Suppose a miracle car has a 100% efficient engine and burns fuel that has a 40-megajoules-per-liter energy content.If the air drag and overall frictional forces on this car traveling at highway speeds total 1000 N,what is the overall limit in distance per liter it could be driven on the highway?


A) 30 km
B) 40 km
C) 50 km
D) more than 50 km
E) not enough information

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