fuel
Quoth Raven asked:


We all know that more weight requires more energy to move it. If a car has more fuel in it, it has more weight, hence more energy,hence more fuel required to move it.
Ignoring all other factors such as more trips to the fuel pump and driving conditions etc, how much fuel would you save by using to half tanks of fuel opposed to one full tank?
Lets assume a 50 litre tank and a car that goes to 35mpg (imperial gallon)

HARRY
fuel economy
hola blue asked:


In a study of fuel economy, each of 3 machines racing is tested using 5 different brands of gasoline to 7 test areas located in different areas. If 2 drivers are used in this study and test processes are done once under the circumstances distinct, as elaborations of proof is needed?

WINSTON