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The following was jacked from an email I received. The Video right click and save as to download. this file will not stream. Kinetic
Energy Released Wow,
it's almost like we're an educational site lately, what with all this physics
and shi'yat. Anyway, here's a neat video from the gun camera of an AH-64 Apache
attack in Iraq. Now while we don't know who these unlucky bastards were, I can
tell you the guy in the middle of the road gets fucked up. As I noticed his
white image on the infrared get bigger and bigger as his innards are scattered,
I sat wondering, "just how fucked up was he?" And so, let the physics
begin... Taking
our queue from Stupid Movie Physics, we know the formula for kinetic energy is
<missing text> So
in their example, a small .45 caliber bullet weighing 15 grams and traveling at
288 meters per second yields is 619 joules of energy. They further explain that
if a man weighing 139 lbs (63.2 kg) were to fall off of a bed, it would yield
roughly the same energy as being shot by that bullet; the difference being with
a fall the energy is dispersed through the entire surface area of the man's body
versus a bullet where the focal point is a tiny circle. KE
= ½mass x velocity2 KE
= (.015kg / 2) x (288 m/s x 288 m/s) KE
= 619 joules of energy PE
= mass x gravity x height PE
= 63.2kg x 9.81 m/s x 1 meter PE
= 619 joules of energy So
taking this information, let's plug in the numbers of the Apache's M230
automatic gun ammunition. We have each round weighing 350 grams and traveling at
800 meters per second. KE
= (.3505kg / 2) x (800 m/s x 800 m/s) KE
= .175 x 640,000 KE
= 112,160 joules of ass whoopin Now
that's a little hard to wrap your army around... I mean just how much energy is
112,000 joules? Well, for starters it's 180 times the energy of the .45 caliber
handgun bullet. So imagine 180 people all pointing guns at this guy's body and
everyone pulling the trigger all at the same time. Hmmm, yes...messy. Furthermore,
we can calculate just how high up this guy would have to plunge in order to
release the same amount of energy as was released when he caught one of the
Apache's 30mm rounds square in the chest... 112,160
= 63.2kg x 9.81 x height height
= 112,160 / (63.2 x 9.81) height
= 112,160 / 619.99 height
= 180.9 meters (or 593 feet) Now,
taking our queue from the evolution of skyscrapers, I found an average 4.26
meters (13.96 feet) per foot. Thus this poor bastard you see splattered all over
Main Street in downtown Baghdad? He looks the same as if someone tossed his
happy ass off a 42 story building. And
the best part? The Apache's 30mm gun is really a popgun compared to the 30mm gun
of an A-10 -- same diameter slugs but they're much heavier and travel much faster.
So should you be unlucky enough to eat one of the Warthog's tank killing
depleted uranium slugs... KE
= (.91kg / 2) x (1500 m/s x 1500 m/s) = 1,023,750 joules of smackdown 1,023,750
joules / 619 joules per .45 cal bullet = 1,626 people shooting you at once 1,023,750
joules = 63.2kg x 9.81 x height height
= 1,651 meters or 5,417 feet or a 1.02 mile freefall But at a fire rate of 3,900 rounds per minute, the A-10's bullets will be more like Lays potato chips -- nobody gonna eat just one. All you fuckers better keep that in mind when you hear the whoop-whoop-whoop of helicopter blades, eh? |