(5 October 2012, 19:34)Straight Shooter Wrote: thanks prepper1 now we can get back to the point. how to prep for the event , even if you think its not valid
To work out the survival chances after a major impact event, you have to have an idea of the size (mass) of the object and the velocity. Taking 10 kilometers as the size of a typical large asteroid (body)
The impact energy deposited equals the kinetic energy (KE) of the incoming object.
Using Newtons Dynamics
KE = 1/2 M V2
V is large!
Orbital velocity ~ 30 km/sec = 66,000 mph
Mass is large!
M = Density x Volume = Density x 1/6 pi D3, where D is the diameter of the object.
average density of rocks on impact
Density ~ 5 gr/cc
Mass ~ 2.5 D3 tons, where D = diameter in meters
convert to equivalent explosive energy in units of tons of TNT. [1 ton TNT = 4 x 1016 ergs]
Impact energy = 250 D3 equivalent tons of TNT, where D is in meters.
A tiny object with D=4 meters packs the explosive energy of the Hiroshima bomb (20,000 tons).
If D = 10 kilometer, the size of a typical large asteroid, the released energy = 250 billion tons of TNT!
10-km diam asteroid =250 Billion tons
vapourised rock and water would be ejected at supersonic speeds into the upper atmosphere encircling the earth. Just before impact the area underneath the body would be heated to temperatures hotter than the interior of he sun.
The shock wave from impact will pulverise everything for thousands of kilometers.
Mass extinction of all major life forms on Earth for the next ten Million years
AND FUCK ME I'VE JUST BOUGHT A BEAR GRYLLS KNIFE
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