In a braking system
No. Friction is useful every time there is a change to how the car is moving. Getting it moving, getting it to turn as well as getting it to slow down.
Yes.
could someone please answer this
all you have to do is sometimes get usful
Smelting
They're useful because I'm awesome
If you didn't have one, how would you work on anything mechanical.
The rosetta stone is used to read hierogyphics.
They are great for war and usful for research anf tourism.
good: usful for time managments BAD: uses battery
They are not but are something that a lot of pupils are familiar with. They are a usful tool for visualising fractions.
because ruben morales talked about it