These came of of the top of my head so here it is it can be used to produce heat or to slow things down in the air. Hope this helped:)
1.keep us from sliding around constantly without stepping .
movement and heat
Friction is very useful but it has its own disadvantages. Friction causes wear and tear. Friction spoils the soles of our shoes. friction reduces speed This is all wrong some not useful types of friction are are when airplanes fly the friction causes heat that materials that will withstand which are costly.
how does friction help car tyres?
Friction is useful when you are trying to stop a car, but not useful in the pistons of a car's engine (It makes them less efficient).
It's useful
friction is useful for: you to walk It is needed for braking Can be used to produce heat
fricton is useful in many many ways: help in protecting from slipping protect the car from sliding due to friction you can make fire from rubbing two stones. etc......... etc....
Friction can be useful for stopping cars when the brakes are put on, if you're running and need to stop quick, so basically to get grip. Also friction is good for fires and warmth.
Lubrication, is one way.Two ways to reduce friction are :.Lose weight.Wet the surface
Okay 2 ways for the friction to increase is speed and non lubricant
It allows you to walk (with out friction between you and the floor this wouldn't be possible) It is needed for braking can be used to produce heat
friction \
movement and heat
1) Friction tends to waste energy.2) The wasted energy gets converted into heat, which may be harmful in some cases - or special measures may have to be taken, to get rid of such waste heat.
Enables cars to move, rather than just spin tyres and go nowhere.
Friction is very useful but it has its own disadvantages. Friction causes wear and tear. Friction spoils the soles of our shoes. friction reduces speed This is all wrong some not useful types of friction are are when airplanes fly the friction causes heat that materials that will withstand which are costly.
Brakes are meant to have a lot of friction and it's useful.