Undersized pulleys will turn the Power Steering, alternator, A/C compressor slower that standard sized pulleys therefore using less power from the engine. The freed up power may allow you to drive slightly faster than before. The true benefit for most street cars is better fuel economy. In a high powered race car the benefit can be measured in hundredths or thousandths of a second. The horse power gain has been claimed to be 5 - 15 extra horsepower.
yes car engines are pulleys
Either will make your car faster.
Yes, the belt system has pulleys.
You would apply force to the accelerator to make the car go faster.
make it less weight
The pedal in the car you push to go faster is the accelerator pedal.
To make a co2 car go faster, make the body streamlined. Keep the weight down and make sure that the axles are smooth.
The faster they make the car the more likely it is to win.
Faster, no. Smoother, yes.
In soviet russia you can
make it go faster
Even a single pulley can hold a car, if it is built strongly enough. It would be an unnecessary complication to use a hundred pulleys.