1.Car Accidents
2.You wouldn't be able to walk
3.Chewing would become even harder
4.You wouldn't be able to write
5.lifewould become difficult
A whole lemon??? If so you would probably choke. But small pieces of lemon are OK.
if you make it happen
For us, it would probably be bad. Without friction, it would be nearly impossible to get around. imagine walking around on ice all day, but worse.
Headaches can happen anytime during whole day or night. So it can happen during allergies too.
everyone would get along there would always be peace
Floods can happen everywhere in the world. Because In Noah's time the whole earth was flooded. And floods can happen at anytime of the day or night.
Then only the lesson mathematics would be taught on that day.
It would rise to the sky slower than a sunny day
nonthing
hi there! not sure what you mean by "useful friction" but I'm guessing that you're asking "what examples are there where friction is useful" A simple example is that of sandpaper. Where you need to smoothen something and using a smooth (ie frictionless sandpaper) would be useless. A more day to day example would include the friction between your shoes and the ground without which you would be unable to walk with (like skating on ice). In fact, friction is required for you to grab anything (even a book which would slip off your fingers without friction). As for an explicit use of friction there's "Friction Welding" where mechanical friction is used to weld metal together. An article may be found on our friend Wikipedia. http://en.wikipedia.org/wiki/Friction_welding How this helps anybody reading! Cheers!
Friction act on us every day. Types of Friction: 1) Sliding friction 2) Rolling friction 3) Static friction 4) Fluid friction
it would dry out