When we walk on a flat ground,do we do any work and why?
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this is because when we walk on a flat ground we don't do any work because our motion is perpendicular to gravitational force no work is done provided (ground is frictionless)
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yes we do.Because we have to break frictional force acting opposite to our motion.
ankanraptan:
But in book it written not done
it's only written with respect to gravity
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