Give reason : grooves are provided in tires and soles
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grooves are provided tires and soles so as to increase the friction with the road due to which they will have a better grip over the road this leads them not from slipping over any slippery Road .grooves actually increase the surface area of the tyre with the road and as surface area is directly proportional to friction force hence a tyre always have some small rubber spokes as well as designer grooves over it. a similar kind of groove structure can also be seen in the shoe soles which we wear which also have the same function
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