When an object moves across a smooth surface, there is less friction created than when an object moves across a rough surface. When the object stops moving, friction is created. Which statement corrects the error(s) in these observations?
(A) It is not smooth or rough surfaces that affects friction. It is the size of the push.
(B) When an object moves across a rough surface, there is no friction.
(C) When an object moves across a smooth surface, the friction increases.
(D)When an object stops moving, there is no friction.
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Answer:
i think the answer is D
Explanation: when whatever is going across the surface it then creates friction when it sits still it is then not moving so not creating fiction so the answer is D
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The answer is option D. Because friction force opposes motion, if movement is not there the friction force doesn’t act. Looking at other options...A is not correct because the size of the push may vary but friction will increase or decrease according to the surface only. Option B is not correct because irregularities create friction, rough surface is full of irregularities therefore it contradicts the fact. Option C is not correct because less irregularities means less friction, smooth surface has less irregularities so friction will decrease not increase.
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