Sept 12, 2001 = (1/2) * (acceleration due to gravity) * [(time)squared] (2005)

Video that applies a basic physics equation to the collapse of the North Tower of the World Trade Center on 9/11. Concludes that high explosives were instrumental in the structural failure of the Tower. Distributed under US Code Title 17, Chapter 1, Section 107 - Fair Use: Scholarship and Research; nonprofit educational purposes. Also distributed under the GPL and Creative Commons licenses.

This item is part of the collection: September 11

Production Company: ping127001.com Productions
Audio/Visual: sound, color
Language: English
Keywords: 9/11; 9-11; Sept. 11; World Trade Center; North Tower; freefall; gravity; high explosives; fireballs; FDNY; NYPD; Farrell; Xavier
Contact Information: www.ping127001.com

Creative Commons license: Attribution-ShareAlike

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Reviewer: wigger - - May 14, 2006
Subject: retards

All you people are retarded. This video is complete bullshit.

Reviewer: Easpageag - - May 10, 2006
Subject: Be Objective

Why can't you find a decent medium point?

It's not beyond comprehension to say that the towers were dropped by a controlled explosion without meaning the government had an ulterior motive?

If that thing fell over sideways, imagine how much it'd take out along the way? Dropping it straight down would be the safest bet, and not that hard to rig up for just such an emergancy. Of course they'd keep it quiet that the building rigged to go, would YOU wanna hang out there?

Plus, wasn't 7 (the one that wasn't hit) a pretty important FBI or CIA office? I heard that somewhere, it'd make sense to get rid of that.

Reviewer: Inkarn8 - - April 27, 2006
Subject: Too much left unanswered

I cannot even get into the mentality behind believing that 9/11 was a government conspiracy. I have wrestled with this since the day it happened and there was one report of a group of Isreali students cheering while watchin the towers fall. Then it was never reported on again. The other video, which I found to be much more comprehensive regarding video of the planes hitting the towers with appendages attached to the bottom of the jets, which appeared to be capable of holding fuel. Numerous NYFD reporting sounds of explosions, no video of the pentagon, no wreckage in the fields of Pennsylvania.
This is a cover up beyond anything that we can comprehend, let alone want to comprehend.
What was worse was the quote he used in the end from the Nazi party member.

Reviewer: ping127001.com - - April 7, 2006
Subject: From the creator

A previous reviewer missed a salient point: the smoke started to eject horizontally at high speed *prior to* the floors starting to fall vertically. Ergo, this indicates that something was forcing the smoke out at high speed before the structure of the building failed. That something can only be high explosives, like C-4.

In addition, a previous reviewer mentioned the rooftop antenna dropping before the floors. This is further evidence of a controlled demolition. The World Trade Center had a large central core as seen here:
http://www.whatreallyhappened.com/IMAGES/wtc1_core.jpg
and here:
http://www.tms.org/pubs/journals/JOM/0112/Eagar/fig3.gif
Thus, had it been a true structural failure, the inner core would have failed *after* the outer core, since it was the north face of the outer core that had sustained the most damage. Thus, the outer core would start falling first. Yet, this is exactly what did *not* happen. A standard controlled demolition destroys the inner parts of the structure so that gravity will start to pull the structure inward upon itself just prior to the outer parts of the structure being destroyed. This is known as a "gravity engine"; such a demolition was performed on the Kingdome in Seattle in March of 2000:
http://seattlepi.nwsource.com/kingdome/main.shtml
As observed in the video of the North Tower, such a gravity engine was used in its demolition. The inner core was demolished first, which in turn pulled the outer core and floor areas downward after it.

The physics numbers are solid and the mathematics are correct, therefore they cannot be refuted.

Another reviewer asked why the explosives did not detonate upon the plane impacts. C-4 is designed to be very stable and only be set off by specially designed detonators; one can even shoot or burn C-4 without detonating it. In Vietnam, US soldiers burned small blocks of it for use in makeshift stoves in C-ration cans. As such, the fires in the North Tower would not have been enough to detonate preplanted C-4 explosives.

Reviewer: jimbobaggins - - March 28, 2006
Subject: um i thunk yuse all dun mist tha point darnit

fergit the fuel, fergit the planes, there is only one thing i wants to know and that is how cum those bildings fell so fast. If,n it warent explosives then what made them fall so gol durn fast. I mean iffen it warent explosives then it musta been sum hire power that spended the laws of physics since nuthing kin fall faster than gravity and these towers fell at about that speed. if thats so then why didnt the floors below the fire which wasnt crushed, broken, bombed or burnt slow down the collapse. huh go on answer that one i dares ya.....hoohoohoo

this film is a bloody good job, there needs to be more of it...wake up....theres something fishy in paradise!!!

Reviewer: dumdedumdumb - - February 14, 2006
Subject: You see what you want to see

I downloaded this fantasy. I watched the slow motion sequence. Despite the narrator's claims that the fireballs were explosives which caused the collapse, it is plain to see the top floors begin to move downwards before the "mysterious" fireballs are seen in a "sequence". Duh! It ain't no mystery! There was one lone fire seen burning before the collapse at the extreme right. This was no doubt due to the fire burning inside. The tower begins to fall (watch the antenna to see the first downward movement). As the very first floor to collapse does so you can see smoke ejected from the windows, (wow - in a sequence too!) just above where the fireballs later appear. When the fireballs appear the first floor collapse is pushing down onto the next floor, which is also on fire (presumably from jet fuel that had not completed its combustion). The fire is pushed out the windows (which are symmetrical) by the resulting outrush of air) The weight of the above floors landing on the next floor causes it to pancake as do all the other floors below it. As for the acceleration due to gravity, I can't argue they physics because I am not a mathematician but the other "proofs" offered here make me suspicious that it is likely "pseudo science". They say you can make figures tell any side to any story. Any qualified math people want to take a stab at debunking this?
The quality of the video was poor. The graffics were barely ok but the delays between scenes were eternal. It took forever to get to the point. The narrator sounded very condescending. Sound quality was also poor.
This video was more relevant in revealing the creator(s)' political agenda rather than any so-called proof of government conspiracy. This is nothing more than a cheap propaganda fiction. I would give it no stars if I could.

Reviewer: glenn - - February 14, 2006
Subject: Ignore the reviews see for yourselves

The math required to understand the physics of a free-falling mass is elementary. Something made the towers fall at free-fall speeds, the tower was designed to
1:Hold many times more weight than it was carrying;
and
2:Withstand the impact and fire from a LARGER plane than the one that hit it;
and
3:Withstand 4 times the Wind Load it was subjected to on 9/11/2001...

ALL at the SAME TIME,

and yet both towers and WTC building 7 fell (NOT TOPPLED but FELL) at FREEFALL speeds, not impeded at all by the massive, UNDAMAGED structure beneath it, and WAS REDUCED TO POWDER in midair... while at the same time we are to believe that "one of the hijacker's" passport happened to escape the conflagration that burned high-strength steel and concrete to a powder and be found by a senior official as soon as he arrived on scene?

The whole world watched the free-fall collapse of both these towers. Everyone said immediately, 'it looked like one of those controlled demolitions' , why? Because it WAS a controlled demolition.

High powered explosives do NOT detonate from fire either, they need to be detonated on purpose.

And why was the whole US airspace open and unprotected, and why did no Air Force jet scramble to intercept? Because they were ordered not to.

How in God's name could this happen without precise pre-planning and Government collusion?

But, like I say, ignore this review and decide for yourself. If you are in the 4th grade, the mathematics involved should be easy for you to figure out.

This was not a terrorist attack on the United States, it was a murder with the goal of going to war against an arbitrary enemy and the goal of increasing repression of the US population and the goal of decreasing the liberties that our forefathers spilled their BLOOD to earn.

Why would the forces controlling the US government do such a thing? To quote G.W. Bush, "they hate our freedom.

How long before the military arm of corporate power and wealth comes to YOUR home towh to "liberate" you like it did Iraq?

Reviewer: markoooo - - February 14, 2006
Subject: conspiracy

I believe it was set up if a plane(s) goes off course fighter jets track it down.ex: payne stewart small plane and others, do the research.
why did someone from unocal go and run afghanistan?
why is it videos tapes where confiscated on the plane that hit the pentagon??
so many videos of the twin towers but only one of the pentagon has been shown. make phone calls ask the people what happened to the video tapes people around the area? like gas stations hotels even the highway cameras?? and to make things even creepier raytheon works for the gov't it has been said that they where working on a plane that may look like the one that hit the pentagon but thats the least of it 5 employees of raytheon died on 9/11 cincidentally they died on a plane... not just on 1 plane but on 3 of the planes that where hi jacked that day...
But you won't hear about that coincidence will you? google it look up the peoples names and where they lived.. look up the obituaries in their home town. Sounds too creepy to me if anyone knows more let me know..tower 7 was detonated of course ...it wasnt hit but you can't set up equipment in a day so it was already predtermined to take it down.

Reviewer: bobby digital - - February 3, 2006
Subject: yeah

no doubt, government knew it was coming. too much info and unanswered questions NOT to have an investigation.

Reviewer: Conspiracy? - - December 9, 2005
Subject: Eye Witnesses

I like this film. Apparently everyone else does not know some of the other evidence that was presented. Numerous fire fighters stated that below the World Trade Center it looked like a war zone. It is very easy for the masses to gather around the world trade center (and the government excuse of what happened), but how about thousands of eye witness reports? Certainly this is not the only video of what happened, and there are many available. Before you make your conclusions, get yourself informed on what happened that day and look at the total picture. We have firefighters that say "We heard explosions on NUMEROUS floors not affected by the plane entering the building". Nonetheless, saying that these 3 buildings (WTC 1/2 and 7) were the ONLY buildings to have ever crumbled because of fires etc. Look at the materials that were used in the WTC and find out the melting point/crumple point and then multiply that by 80 floors that were not affected below the blast.

Reviewer: MediaWhore - - October 23, 2005
Subject: Conspiracy Theory

I'll give this video 3 stars for production quality even though I think the conspiracy theory here is a load of BS. It is suggested here that possibly the American government planted these attacks and planted explosives in the 2 towers so that they would surely fall. This is almost as laughable as those who believe the 9-11 attacks never even took place.

Reviewer: KuatoLives - - October 23, 2005
Subject: Utterly Absurd Hypothesis

I'm still in shock. I find it so hard to believe someone would go through all that trouble to come up with such a laughable conclusion. Nice math, but as the other reviewer stated already, it seems pretty obvious that it was the displacement of burning air within the compromised floors that were being blown out AS THE COLLAPSE TOOK PLACE. Besides, wouldn't it be a fairly odd coincidence that the 'pre-planted explosives' just happened to be on the floors damaged by the plane? And why wouldn't they have been immediately set off by 9,000 gallons of jet fuel exploding? Even if someone had a detonator, why the hell would you wait? I mean, why not blow everything on impact? No offense, but if you're going to spend your time creating such preposterous theories, at least come up with a conspiracy halfway plausible. I mean it. Don't make me go Republican.

Reviewer: deadhorsepoint - - October 10, 2005
Subject: Not Convincing

Pressure created by the symmetrical fall of the upper levels created a forceful wind which momentariy blew the fire outwards.

The phyics presented in the first portion is not relevant to the argument.

Reviewer: 1mile2go - - October 10, 2005
Subject: Acceleration Due To Gravity

Excellent, Well done investigation of the unusuall implosion of the towers a must see for all those who have questions and doubts about the official reports

Segments

Part I: Intro, Pictures of Ground Zero, collapse, aftermath
Part II: Formula and walkthough using height of the North Tower
Part III: Video of the North Tower collapse (whole)
Part IV: Quote of World Trade Center Steel
Part V: Segments showing explosions in upper portion of North Tower collapse
Part VI: Conclusion, dedications

Shotlist

1. Photos of Destruction at World Trade Center, people running from the collapse, picture of a woman looking at a wall of the dead

2. Formulas:
Height = (1/2) (acceleration due to gravity) * (time)squared

The North Tower of the World Trade Center:
- Height of North Tower = 1,368 feet
- Acceleration due to gavity = 32 feet/sec(squared)

- 1,368 = (1/2) (32) (t)squared
- Multiply by both sides by 2: 2,736 = 32t(squared)
- Divide both sides by 32: 85.5 = t(squared)
- Square root of both sides: 9.2 seconds = t

- Solving for time in seconds one gets: 9.2 seconds
- Meaning: an object that goes into complete freefall from the top of the North Tower hits the ground in 9.2 seconds (in a vacuum)
- Time for North Tower to collapse: approimately 10 seconds (.8 second difference for drag from air)

Therefore, the numbers are statistically equal; ergo, the North Tower went into complete freefall.

Had it been a *true* structural failure, it would have taken a much longer time.
- 110 floors of North Tower/2 floors collapsing per second = 55 seconds
- 110 floors of North Tower/3 floors collapsing per second = 36.6 seconds
- 110 floors of North Tower/4 floors collapsing per second = 27.5 seconds

55 seconds, 36.6 seconds and 27.5 seconds are not even close to 9.2 seconds.