Supposedly going faster uses more fuel. But your getting to the place quicker. Shouldn’t you just be using the same amount of fuel as if you were driving slower and getting there later?

Question

Supposedly going faster uses more fuel. But your getting to the place quicker. Shouldn’t you just be using the same amount of fuel as if you were driving slower and getting there later?

In: Chemistry

Answer 1

It depends on how proportionaly faster you will be to fuel consumption. If for example you are spending 20 litres of fuel to travel at 100 kilometers per hour, and you need to travel 200 kilometers, It will take you 2 hours and 40 litres. You spending twice as much to travel twice as fast, it will take you 1 hour and 40 litres, which is faster and takes same amount of fuel. But if you are spending twice as much to travel 1,5 times as fast, it will take you 1,3 hour and will take 52 litres fuel, which is still faster but takes more fuel.

Your statement is true if speed and consumption scales by SAME amount. But in real world they usually not.