Thanks, that was what the professor said too. As far as I can tell though work=f*d was already accounted for when I averaged calories/mile. In any case, this was the correct answer.
Homework Statement
"One gallon of gasoline contains 3.1*10^7 calories of potential energy that are released during combustion. If 1 gal of gasoline can provide the force that moves a car through a displacement of 25 mi, what is the average force produced by the gasoline?"
Homework Equations...