What are some activities that need friction to work?

Question

What are some activities that need friction to work?

Answer 1

Practically almost everything you do requires Friction to work.

There are 2 kinds of friction: Good and bad.

Good friction are those that allow you to drive, walk, hold something, holding stationery.

Bad friction are those that causes wear and tear (i.e. shoes spoil after a period of time), undesired slowing of objects/movements (frictional force acting on a car means it'll need more force to go forward), inertia.

Answer 2

driving (tires to push forward, and to stop), cross coutry skiing, walking, running, bicycling, pretty much anything that requires you to stop using friction, curling

Answer 3

Starting a flame using a stick....

Answer 4

s*x

Answer 5

One more. Writing with a pen.