Suppose a miracle car has a 100% efficient engine and burns fuel having an energy content of 40 MJ/L.If all resistant forces on this car traveling at highway speeds is 1000 N,what is the overall limit in distance per liter driven on the highway?

Question

Quizplus · Accepted Answer

The work done by the car is equal to the force times the distance. With 100% efficiency, all the energy from the fuel is converted to work. The energy content is 40 MJ/L, and the force is 1000 N. Therefore, the distance is 40,000,000 J / 1000 N = 40,000 meters, or 40 km.

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