Pls answer if u know the answer ^w^ thx! Friction _____. A) is always and unwanted force B) works in the opposite direction of motion C) causes machines to work 100 percent efficiently D) can be increased

Pls answer if u know the answer ^w^ thx!

Friction _____.

A) is always and unwanted force

B) works in the opposite direction of motion

C) causes machines to work 100 percent efficiently

D) can be increased using lubricants, like oil

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Pls answer if u know the answer ^w^ thx! Friction _____. A) is always and unwanted force B) works in the opposite direction of motion C) causes machines to work 100 percent effi…

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