Answer:
Drag force is the friction force that opposes the forward motion of a vehicle and is proportional to the square of the velocity of the vehicle. As the speed of a car increases, the drag force also increases, resulting in higher fuel consumption.
If two cars are traveling at different speeds, the one traveling faster will experience a higher drag force than the one traveling slower. This higher drag force requires more power to overcome, resulting in higher fuel consumption for the faster car. In other words, the engine of the faster car has to burn more fuel to produce enough power to overcome the increased drag force, leading to a higher fuel consumption rate.
To summarize, the difference in drag force between two cars traveling at different speeds contributes to the difference in fuel consumption between the two cars.
Hope this helps!