Ok this seems interesting.. First, Engineering Toolbox is not the only source for that equation, it is generally accepted when it comes to wind force, like in the Eurocodes for example. I see what you mean with the complexity though, but that sort of comes in with the shape coefficients and not...
Yes, I have also had the thought that the answer to this is related to that. But- sometimes the drag coefficient is even >2 which means the force would be even larger than the momentum equation would yield... confusing.
I guess it is considered pretty basic physics and they don´t go into it that deep. This wikipedia link offers some insight:
https://en.wikipedia.org/wiki/Drag_equation
I was wondering if anyone has had the same question as I do and found out why the two approaches yields different results, it...
These 2 links explain the different solutions. Dynamic pressure vs momentum change. As I see it, it is the same problem. A flow of a fluid causes a force on a surface perpendicular to the flow, as it stops the flow. But the solutions differ by this factor 1/2...
In fluid flow (such as wind), the force exerted on a perpendicular surface is derived from kinetic energy and is ρAv^2/2. But in problems involving a jet of fluid that strikes a plate, the force is derived from momentum and is explained to be ρAv^2, lacking the 1/2 factor. Can someone please...