How are rough surface useful to us 15 lines
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Answer:
Rough surfaces provides us friction which makes us easy to walk. Without friction, we can't walk as on a smooth surface e.g. icy surface, it's tough to walk as these surfaces don't provide friction.
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Explanation:
rough surfaces have high coefficient of friction
it has groves and ridges that would help the groves and ridges of other substances to firmly fit into it and prevents it from slipping.
it helps us to walk firmly
it helps us to write on books and black boards
it is sued in brakes of vehicles and also gives a grip to it's wheel
Air resistance is also a kind of friction it helps to slow down the parachute
hope this helps you
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