I think part of the problem is that people are using the terms weight and mass interchangeably...
Just so the latecomers don't need to wade through 6 pages of posts, here is #23 again:
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Vt = sqrt((2 * m * g) / (rho * A * Cd))
where
Vt = terminal velocity,
m = mass of the falling object,
g = acceleration due to gravity,
Cd = drag coefficient,
rho = density of the fluid through which the object is falling
A = projected area of the object.
Do you see that term "m * g"?
That is called w_e_i_g_h_t.
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And if you follow that NASA link I provided a couple posts up, you will see that they substitute the "m * g" term with "W" (weight), when they present the same formula.