Thanks for those links Jim. I'm having a primary read now. The links to the article presenting Therkelsen's theorem (has a nice ring to it doesn't it? are the more salient theorum or proof I'd like to investigate, though it's got me reaching for the refresher books.

Though I'm not sure I yet agree with his reference to mass (ref: measure of quantity of matter in a body aka std kilogram of quantity of platinum-iridium alloy under standard conditions) aka "weight" in the context of wing loading, as mathematically having "volume" for the purpose of its resolution or the relevance of the property of density (mass per unit volume) (ie: m/V) in the discussion of wing loading (ie: W/A) and therefore application of n³. (ie: W=M(G) g)

Velocity (speed) is also a vector and two dimensional having both a magnitude and direction, though I still have to assess the former in overall context. Thanks for providing the links. I will have a read and probably come up with more questions than answers.

cheers