Because humans, like engines, have a span of resistance and speed where they work best.
Gears lets you trade power for speed , or the other way around. This means you can keep pushing the pedals with the same, comfortable amount of effort regardless if you are riding slow uphill or fast downhill.
the clutch pedal
A brake shows the car/bike down until it comes to a hult/stop. A gear changes the speed the engine works at depending on what type of road you are driving on and the speed limits. If you are asking about a bike then the gear's change the speed at which you pedal at, gear 7 on a bike makes you pedal slower but you have to push harder down on the pedals, however gear 1 on a bike makes you have to pedal faster and more genitally on the pedals, - both gears really work your muscles... so if you have a bike with gears up to 7 stay on 3 or 4! Gear box = what you use to change the gears on a car. Handle bar = what you use to change the gears on a bike.
The pedal on the left is the clutch. You press it when you are changing gears.
The pedal in the car you push to go faster is the accelerator pedal.
Bicycles with external gears have two, one guide pulley and one tension pulley, both in the rear derailleur. Some bicycles have further pulleys on the frame for either the brake or the shifter wire to run over.
The clutch pedal.
if there's a middle pedal you're in a stick shift and you'll need to know how to use the pedal on the left (the clutch) to shift gears
It is the accelerator pedal.
Because the gas pedal controls fuel to the motor. It does not interact directly with the transmission.
I pressed the pedal to move faster in my car.
The brake pedal is used to bring a motorized moving vehicle to a safe stop. Vehicles such as cars, trucks, bicycles, and all utilize a brake petal mechanism.
With faster keys, more notes, dampers, the soft pedal and the legato pedal.