When you are riding in a car do you ever wonder how such a fast moving object can be stopped so easily. With just a tap on the brake pedal a car can slow down from 100kmph to 0 in a matter of seconds and this all comes down to very simple science.
When you push down your foot on the brake pedal a connected lever pushes a piston into a master cylinder filled with hydraulic fluid. The hydraulic fluid is then pumped through tubes into wider cylinders positioned next to the brakes on each wheel. This hydraulic system multiples the power of the action of putting your foot down on the brake pedal.
Now the discs on the brakes have the power to rub hard enough against each other to convert most of the kinetic (movement) energy in to heat using the power of friction. But remember if to much friction is applied to flammable objects it will result in a fire.
I find contraptions and science like this amazing and I might just even make an IE project relating to this.
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