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Answer:
Question: what type of surface is commonly observed in a play ground slide rough or smooth?
Answer: Answer for the Playground slides:Playgroud slides commonly have smooth surfaces smooth surface reduce friction to the child's body sliding on it and facilitates faster sliding movement which is enjoyable for the child.
Question: how does friction acting on such type of surface affect the movement of a child sliding on it?
Explanation:
sana nakatulong.(・´з`・)