The lowest flying speed v (in ft/s) at which a certain airplane can fly varies directly...

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The lowest flying speed v (in ft/s) at which a certain airplane can fly varies directly as the square root of the wing load w (in lb/ft). If v = 105 ft/s for w = 25 lb/ft, find the derivative of v with respect to w. dw The lowest flying speed v (in ft/s) at which a certain airplane can fly varies directly as the square root of the wing load w (in lb/ft). If v = 105 ft/s for w = 25 lb/ft, find the derivative of v with respect to w. dw

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