whi is it easier to walk rough surfaces than on smooth substances

 it is easier to walk rough surface because there is more friction on rough surface than smooth surface .there's one more reason is that one cant walk on a surface until he has grip on it and rough surface provide good grip

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due to friction

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it is due to friction which acts in the opposite direction.

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we know that friction depends on the irregul arities of the two surfaces.it is easier to walk on rough surfaces because there is more friction while on smooth surfaces less friction is there.

hope this helps 

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