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If the equation F=-bv^2 describes the drag force of an object...then the differential equation for the object's motion would be:

dv/dt= -g+bv/m

or is it...

dv/dt= g-bv/m

After solving the equation, should I get...

V=mg/b[1-e^(-bt/m)]

Also, does this look like the position v time graph of the object?

http://home.earthlink.net/~urban-xrisis/phy001.gif [Broken]

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# Homework Help: Free fall with air drag force

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