i think it is kinetic energy to thermal energy.
Kinetic energy gets turned into heat by friction.
heat and sound energy will be produced due to the increase of friction
Potential energy turns to kinetic energy as the bike picks up speed, kinetic energy turns into thermal energy as the brakes bring it to a stop.
kinetic energy
Depends on the type of brakes, but most bike brakes would use levers.
depends on the type. There are hydraulic bike brakes, but most are mechanical.
Heat energy
Kinetic.
You use chemical energy.
it is called mechanical energy.
very very bad energy
Depends on how far you want to take it, and what kind of bike it is. The most common type of light weight bike is probably a road bike, and they are generally equipped with caliper rim brakes, with single-pivot being the lightest design available. But there are also light weight MTBs, and they generally run disc brakes. A MTB for flat terrain can still have straight-pull brakes(v-brakes), which is a kind of rim brake too. They can still be lighter than disc brakes although braking isn't quite as good.
electical energy is transform to heat energy
electrical energy
it all depends on the type of bike. Do you have one in mind? I'm not sure how much it cost but you should go into a local dirt bike shop and find out. I hope his helps