[1] In tests for fuel economy, cars are driven at constant speed V on a level highway. With no accel- eration, the force of propulsion F must be in equilibrium with other forces, such as the air resistance, and so on. Assume that the variables affecting F are the velocity V, the rate C that fuel is burned, in volume per time, and the amount of energy K in a gallon of fuel, in mass per length per time-squared. Determine F as a function of V, C, and K using dimensional analysis.