Question

______ can be used to reduce friction ​

Answer 1

Answer:

oil

Explanation:

☆┌─┐ ─┐☆

　│▒│ /▒/

　│▒│/▒/

　│▒ /▒/─┬─┐◯

　│▒│▒|▒│▒│

┌┴─┴─┐-┘─┘

│▒┌──┘▒▒▒│◯

└┐▒▒▒▒▒▒┌┘

◯└┐▒▒▒▒┌⋱ ⋮ ⋰

⋯ ◯ ⋯ ︵ 　　　

Answer 2

Answer:

bearing

or other rolling objects can reduce friction ecept them there are many ways to reduce the friction