1.

Walking becomes difficult, When the ground is covered with snow or sand this is becauseA. ground become slipperyB. our foot can exert much smaller force in the from of backward actionC. either (a) and (b)D. neither (a) or (b).

Answer» Correct Answer - B
When ground is covered with snow or sand, our foot can exert much smaller force in the form of backward action.


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