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what is the proof for w = F S cos theta

Suppose a constant force F acting on a body produces a displacement s in the body along the positive x- direction.

If  is the angle which F makes with the positive x-direction of the displacement,then the component of F in the direction of displacement is 

So 

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this is the scientifically proof formula that

 

w=fs

w=mg*s

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There is a Derivation for That.

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 there is no derivation for W= F x S but this formula is used to derive the formula for KE = 1/2 m v square ( square is only for v)

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https://www.meritnation.com/cbse-community/questions-answers/Ytl2U34a@7canQUexjalaA!!

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 Watashi wa manga ya anime ga daisukidesu.

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