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From: schoenfeld.one on 23 Oct 2007 09:02
Most people don't know that there were actually 3 buildings which came
crashing down on the day of 9/11.

The third building, WTC 7, can be seen here

http://video.google.com/videoplay?docid=-7750532340306101329

There is no mention of this building in 911 Omission Report.

Can fire make a building come crashing down at free fall speed?

If you think it can, patent the idea and make billions in the
demolitions industry!

How do we know WTC 7 was demolished?

If WTC 7 collapsed in 6 seconds, and it takes 6 seconds to free fall
from the roof of WTC 7, then you got it - WTC 7 underwent a free fall.

This means as the each floor was falling straight to the ground it did
so without crashing into anything on the way. ONLY CONTROLLED
DEMOLITION CAN ACCOMPLISH THAT!

PROPOSITION 1:
It took a total of 6 seconds for the roof of WTC 7 to reach the
ground. This proposition is supported by the empirical,

http://video.google.com/videoplay?docid=-7750532340306101329
Collapse start time: 17 seconds
Collapse end time: 23 seconds
Total collapse time: 23-17 = 6 seconds

PROPOSITION 2:
A free fall from a height equal to the roof of WTC 7 would take 6
seconds. This proposition derives trivially through (Galilean)
kinematical considerations alone:

Displacement = initial velocity * total time + 1/2 * acceleration *
total time^2

or

s = ut + 1/2at^2
where
s = 174 m (height of building)
u = 0 m/s (building was stationary prior to collapse)
a = 9.8 m/s^2 (since gravitational field strengh averages at
a constant)

Thus,
174 = 0 t + 1/2 9.8 t^2

Solving for t
t = sqrt( 2 * 174 / 9.8)
= 5.9590
~ 6 seconds

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