Voodoo 13: Friction is a friend and enemy when Skateboarding.. Friction slows you sown and heats up your wheels and wheel bearings, but it also helps you slow or stop and keeps you from sliding out of control when turning..
Brakes are meant to have a lot of friction and it's useful.
No Friction Runes Computers
Ice on a flat surface - low friction but not useful for walking safely Greasy surfaces - low friction but not useful for handling objects securely Wet banana peel - low friction but not useful for maintaining balance
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.
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 is useful
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.