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Question


Which of the following forces helps us walk on ground?


Options:
A .   Buoyant force
B .   Weight
C .   Frictional force
D .   Drag
Answer: Option C
:
C

While walking, we apply a force on ground in backward direction. The ground, in turn, applies a force on us in forward direction. This force is basically the frictional force which opposes slipping between our foot and ground.



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