NIST wrote:In Stage 2, the north face descended at gravitational acceleration, as the buckled columns provided negligible support to the upper portion of the north face. This free fall drop continued for approximately 8 stories or 32.0 m (105 ft), the distance traveled between times t = 1.75 s and t = 4.0 s.
Why do I waste my time splitting hairs? NIST says the NW corner fell at freefall and this should be expected.
Of course, their sim shows the building wrinkling up like a crushed beer can, the NW corner drooping down slowly over a period of seconds due to the folding of previously vertical surfaces. There's no need to reconcile the two, is there?
