Because when you throw and hit the ball, their is friction on it.
when i am ask is friction important i say the answer is yes. friction is important and can help people in many different ways. like cars for a example cars use friction to drive on the road. there is many different types of friction to; dry friction, fluid friction, lubricated friction, skin friction, internal friction, ect..... all of these types of frictions can be different a different way.
Well it is either static friction or rolling friction
Friction is important because if we didnt have friction we'd slide all over the place like a crazy lubed hippo.
Friction is important because without friction we would be sliding and slipping everywhere as friction slows down and stops things. Friction occurs when two things touch or make contact.
An important formula is that friction = (coefficient of friction) x (normal force).
If it weren't for friction, a baseball would slide off of a bat when it should be hit.
In the bearings, where you want as little friction as possible.
To reduce the friction
the game
without friction you could be able to stay in one position
The lack of friction on icy pavements when you are trying to walk to the shops, only to slip on to your back (maybe fracturing bones), shows how important friction really is.