Fuel Consumption 0/1 point (graded) A person has a moving truck which has a mass
ID: 1780280 • Letter: F
Question
Fuel Consumption 0/1 point (graded) A person has a moving truck which has a mass m when it is empty. When the truck is loaded, its mass is 2m. She compares the fuel comsumption (in liters/100 km) of the loaded truck (Cioaded) with the fuel consumption of the empty truck (Cempty ) and finds out that, on flat roads: (hint: Remember that the work done by the engine must compensat for the energy loss by air drag and the energy loss by friction) o Cloaded-Cempty o Clouded = 2Cempty The increment in fuel consumption (Goaded-Cempty) at 50 km/h is greater than the increment in fuel consumption at 20 km/h. The increment in fuel consumption (Cloaded-Cempty) at 50 km/h is lower than the increment in fuel consumption at 20 km/h. X o The increment in fuel consumption (Cloaded Cempty) at 50 km/h is the same as the increment in fuel consumption at 20 km/h.Explanation / Answer
Correct Ans:
The increment in the fuel comsumption (Cloaded - Cempty) at 50 km/h is greater than the increment in fuel consumption at 20 km/h
Because the engine needs more power now and it derives this power using fuel only hence greater at 50 kmph.
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