Q.

Is it true that we can walk on a rough surface easily?


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a

True

b

False 

answer is A.

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Detailed Solution

The above statement is true.
We can walk easily on a rough surface because a rough surface creates more friction with our feet. It is not easy to walk on a slippery surface where friction is very less. The roughness of surfaces is one of the factors that increase friction. If a body moves over a surface, the grip between the surfaces will be high if the surface is rough, resulting in friction between the bodies.
 
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