Don't change the subject... This i basic physics, kinematic equations. You would of learnt this at the start of your physics course...
You remember these, right? Do u remember how to transpose equations? I tried but i had to resort to google...
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This is the freefall equation to find out the time.
a is replaced by g for gravity which is 9.8m/s2.
d is displacement.
And we can ignore that v as initial velocity is at rest
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Time equals the square root of 2x545/9.8...
The answer i get here is 10.546 seconds...
These are the laws of motion physics.
Force
Newtons 3rd law of motion states for every action there is an equal and opposite reaction
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That man applies 20N of force to that box and there is 20N of resistance.
So if we take the bolts. Each one of them needed force to sheer, maybe 50kN. And so needed a resistance of the same. Multiply that by every bolt and we have a huge amount of resistance. It should of deccelerated but it actually kept accelerating... This is impossible...
Column buckling
The columns are really what holds the building up. Their resistance to the vertical load is enourmous. Im not even going to check cos its irrelevant how much it can take, the point is that it can take it...
That's what happens to a column, applying enormous amounts of resistance.
So then how is it possible that this building accelerated, was pushed by gravity itself, no resistance whatso ever?
I'm not interested in other lines of arguments, I'm looking closely at this... Because this by itself debunks the plane theory.
These are the laws of physics
Yes I agree with you that the laws of Physics are applicable, but we must consider the Energy implication of the building falling and also the required energy for the shearing of each of the floors' bolted connections.
Fundamentally, the energy required to shear each of the floors' bolted connections is the same for each floor.
What was the energy required on each floor to shear all of the skin's bolted connections plus all of the core's bolted connections for the floor to pancake down to the next floor level? Let us assume that the energy level was x KJ/floor.
What was the stored energy levels in each of the twin towers? Both towers were respectfully 417 and 415 metres high and each building had 110 floors. The average height difference between floors in the towers was around 3.8 m. The weight of each building was around 500,000 tones. (Let us assume that the weight in each building is expressed in metric tonnes.) This is the dead weight for each of the towers. The live load in each tower consisting of the weight of the people working in each tower, the furniture for people to work at, the weight of paper and books etc., could have been the same as the dead weight for each of the towers. If this assumption is right then the dead and live loads for both towers would have been around 1,000,000 t, with an average weight for each floor being of the order of 9,090 tonnes.
The stored energy of each floor if it falls to the floor below, is 9,090 x 9.8 x 3.8/1000 MJ's ≈ 338 MJs per floor.
If we assume that that the collapse of the tower buildings began at floor level 93 for the northern building and floor level 77 for the southern building, then the available energy levels of each tower to shear the bolted connection after the building collapsed 3.8 m initially onto the floor below is,
For the Northern tower ≈ 5,408 MJ and for the Southern tower ≈ 12,168 MJ
If the energy needed to shear the bolted connections on each floor level was of the order of 2,500 MJ, i.e. around 7.7 PW of power, then the available energy from the building structure above the floor that collapsed is: -as the floor
For the Northern tower ≈ 2,908 MJ and for the Southern tower ≈ 12,168 MJ
The energy available to collapse the next floor level is :
For the Northern tower ≈ (2,908 +5408 + 338) MJ ≈ 8,644 MJ and for the Southern tower ≈ (9,668 + 12,168 + 338)MJ ≈ 22,175 MJ
Now if we repeat this calculation for both towers then we would observe that the energy used up to shear the bolts on each floor level as the towers collapse becomes insignificant in comparison to the total available energy for the towers themselves.
People can do the maths for themselves to confirm the above calculations.
To come to the right conclusion, we must use the right applicable laws of Physics.
Just using the velocity equations as Cristco was suggesting, is going down a rabbit hole that is not applicable.
Shalom