Yes, applying the brakes on a bicycle should slow it down. Little squares of rubber are pressed to the metal rimming on the bicylce's wheel when you pull a handle brake, or pedal backwards (depends on if it's an adult bike or children's bike).
...convert the rolling energy into heat.
They are warm because the friction makes the molecules in the brakes move faster, which causes it to warm up.
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Contaminated fluid? Frozen calipers?
Most common cause is imperfection in rotor or rotor's. Rust or hot spots.
the rear brakes are grabbing. the linings may have fluid on them from wheel cylinder leak or dust buildup. sanding the shoes may help .
Because your back ones are not coming on. adjust the back pads until they just touch the drums before applying the break pedal
probably not your engine, sounds like its time for new brake pads. if this doesnt correct it have the master brake cylinder checked
Brake rotors or drums need to be machined or replaced. If it causes steering wheel shaking, check front brakes. If happens when applying parking brake look to rear brake problem.
Engine stalling when applying brakes is usually indicative of a leaky brake booster. The brake booster uses and stores engine vacuum while driving to assist your braking effort (power brakes). When the booster's air diaphragm is leaking air, applying brakes causes a substantial vacuum leak in the intake manifold, causing the engine to stall.
Disc brakes do not have springs to retract the pads form the rotors, therefore they are millimeters from touching and even dust can make them hiss. However if they screech when applying, this is usually the wear indicator rubbing against the rotor warning you to replace the pads.
1989 silverado left turn signal set applying brakes causes the left turn signal to dim and the two right rear tail light bulbs to alternate brightly? Further problem occurs to same truck - in Park and brakes not applied -- if head lights are on turn signal flash slows right down almost to a stop and becomes very dim
the brakes or the emrgen see brakes