In any part that you want to keep moving, like a spinning wheel, friction is just a nuisance.
Brakes are meant to have a lot of friction and it's useful.
Friction is sometimes not useful as when a player drives forward in a wet condition the ball slows down due to the friction so it is harder to control and difficult to get a shot away. Also a player can lose momentum during fast strides or slip in wet conditions. The ball will slow down because of the friction with the grass so it is easier for the goalkeeper to save it.
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
how does friction help car tyres?
Sandpaper is high in friction but is not considered useful in terms of being helpful in a general sense.
stopping cars Friction is useful to start a fire with sticks.
It is useful
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).
The brakes! And the tires (no friction = no traction).
there is friction in your cars brake system and without that frictiuon there your car would roll away whenever it was on a hill so this is a good example of when friction is useful.