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04-02-2016
Physics

contestada

If you push a chair across the floor at a cibstant velocity how does the force of friction compare with the force you exert?

Respuesta :

04-02-2016

-- "constant velocity"   ===> acceleration is 0 .

-- acceleration=0   ===>   forces are balanced

-- balanced forces   ===> (friction) + (force you exert) = 0

   (friction) = -(force you exert)

They have equal magnitude and opposite direction.

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