Question

two things that would be impossible to do without friction??

Answer 1

two thing which is impossible without friction

1. We cannot walk without friction as we will not get enough resistance to walk you have noticed that when you are walking surface which is having oil which reduce friction and make difficulty in walking
2. If there is no friction you can understand that it is impossible to walk If there was no friction we can't even light a match sticks as it is burned due to heat caused by friction