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It is use full in the right situation.
If you're going down a long steep hill you should leave your car in 4th or 5th and let it cruise down the hill at its own speed.
This saves the brakes and also lets you have a more controlled descent, if you have a large load in say for example a truck you should definitely use your gears as your breaks could overheat.
It will increase your overall fuel consumption a little if you use engine breaking (that's what slowing down with your gears is called) often, but depending on how expensive your breaks are it could be more economical.
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∙ 14y ago
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Does brakes on a bicycle have a lot of friction or not much and is it useful or not useful?
Brakes are meant to have a lot of friction and it's useful.
What are 2 way in which friction can be useful?
Brakes, and Shoes
How bacteria could be useful instead of hazardous?
explain how bacteria could be useful instead of hazardous.
How friction is useful in brakes?
it is useful as because of the interlocking between irregularities present in the tyres and the road it stops the car
2 examples where friction is useful?
Wooden match and car brakes
What part of a bicycle is a useful friction?
The brakes! And the tires (no friction = no traction).
Explain how bacteria could be useful instead of hazardous?
explain how bacteria could be useful instead of hazardous.
How is rubbing alcohol useful in cleaning disc brakes?
It is not useful at all for that. I use a proprietary brake cleaner from the auto store .
How is friction useful?
It is helpful for when you walk .
A car that brakes suddenly comes to a screeching halt Is the sound energy produced in this conversion a useful form of energy?
because it have sound energy
Why is liquid useful for making brakes work?
It is not useful because if the liquid run out the car can't stop but if you use air than it is useful as when the air runs out there automatically comes more
Why is friction useful for bike brakes?
The friction is useful on a bike when you push it.
