Quote from WT7 ???:
I saw this thread and just had to join the discussion, what none of the people here like this Haroki character are even asking is how in the world did WTC 7, which was not hit by hijacked planes, collapsed in 6.6 seconds, just .6 of a second longer than it would take an object dropped from the roof to hit the ground. Where is the delay that must be expected due to conservation of momentum, one of the foundational laws of physics? That is, as upper-falling floors strike lower floorsâand intact steel support columnsâthe fall must be significantly impeded by the impacted mass.
NO ONE can change the laws of physics
moonbat or stupid bat
One of your problems is the assumption that you're correct that it took 6.6 seconds to fall.
http://www.debunking911.com/pull.htm
This evidence supports the NIST contention that the building collapse progressed from the penthouse out as columns were weakened by the fires. The slow sinking of the penthouses, indicating the internal collapse of the building behind the visible north wall, took 8.2 seconds according to a NIST preliminary report. Seismograph trace of the collapse of WTC 7 indicates that parts of the building were hitting the ground for 18 seconds. This means the collapse took at least 18 seconds, of which only the last approximately 15 seconds are visible in videos: 8 seconds for the penthouses and 7 seconds for the north wall to come down.
2nd problem with your statement is that while yes, 7 wasn't hit by planes, it WAS struck by falling debris from 1.
http://www.911myths.com/html/wtc7_damage.html
I won't bother to copy quotes here, go to that page yourself and see what the firefighters were saying at the time. They say there's lotsa damage...
3rd problem with your statement is that while yes, planes didn't remove the fire proofing on 7, fireproofing is typically given a time rating - that is, an amount of time that the applied fireproofing can be expected to protect the steel from heating to the point of losing its' structural strength. Generally the rating is 2-4 hrs. Why 2-4 hrs? Because that's a reasonable amt of time to evacuate the building and get firefighters in to fight a fire and get it under control to prevent further heating. This is determined by engineering factors and in the city's building code - or rather in this case, by the Port Authority code.
And it's also a fact that the fires were unfought for 5-6 hrs due to lack of water pressure and concerns for losing more firefighters - well beyond the typical fire rating given to 7's fireproofing. So a collapse was inevitable at some point.
4th problem with your statement is that your source about conservation of momentum doesn't have the facts straight.
Here's a rather lenghty but good explaination of the physics in calculating how long 1&2 should take to fall. Unfortunately it doesn't address 7, but it shows how flawed the CT sources are in figuring out this very important issue.
http://www.911myths.com/WTCREPORT.pdf
In the end, the CT theory is nothing but a pack of lies, misquotes, and reliance on old data that has since been abandoned.
Also, NIST hasn't released it's final version on 7, so let's wait until we can see what it says, eh?