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:)
movement and heat
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
The friction is useful on a bike when you push it.
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.
Okay 2 ways for the friction to increase is speed and non lubricant
movement and heat
Enables cars to move, rather than just spin tyres and go nowhere.
Brakes are meant to have a lot of friction and it's useful.
Rougher surface and more weight to the object increases friction
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 is useful in various ways, such as enabling us to walk and grip objects. It is crucial for vehicles to move on roads and for machines to operate effectively. Friction also helps in slowing down moving objects and preventing slipping or sliding.
No Friction Runes Computers
the friction from pushing the hull through the water is not useful as long as you're travelling.
It can be useful when a ball is catching