Flight 175 Turning And Burning, ...i`ve never seen this before! Options

[CocaineImportAge...]

south tower impact

...anybody!?!

[amazed!]

Skyarcher

The plane does slow down, abruptly. It went from 400kts to 0 in just a second or two.

Again, you are using a hypothetical, which can go only so far. In fact, the building was not moving and the airplane was. Thus your second point is lost on me, despite your reference to Newton's II

According to what I have read, in fact the building did react to the strike by moving very slightly, as designed. I wish I could provide a link, but I've read that the building did sway, and then recover to static. That is the building absorbed the energy of the plane, and was damaged in the process. Exactly how this works out to equal and opposite reaction I'm not sure. I am no physicist. The interview with the architect of the building compared it to mosquito netting being pierced by a pencil. That seems an apt comparison to me.

Not being a physicist, I would think that if the exoskeleton of the building had been solid and continuous, as opposed to having something like 2 foot spacing in windows, then it would not have allowed penetration such as we saw.