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Man Tries to Break Sound Barrier - Without a Plane 
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Missed it at the time, but Gawker's piece made me smile:
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Red Bull to Murder Innocent Man in Heartless Marketing Stunt [UPDATED]
Mallory Ortberg

Proving that there is nothing they will not do to ensure the phrase "it gives you wings" is permanently seared along our frontal lobes, energy drink manufacturer Red Bull has captured a man named Felix Baumgartner and imprisoned him in a tiny metal sphere. Reports indicate they plan to drop him to a certain and horrifying death some 120,000 above New Mexico and there's nothing that any of us can do about it. God have mercy.

Update, 2:10 pm: Felix has jumped from the sky-vessel. "The air outside the vessel is nearly a vacuum," an announcer says. "He will have to avoid spinning out of control." In what is either a merciful lie or a cruel jest, the ground crew appears to have convinced Felix that he has been outfitted with an "emergency chute."

Perhaps it is better for him not to know.

Perhaps this sacrifice will keep the Red Bull satisfied for another year, and our crops and our women will be safe from his violent appetites.

Update, 2:18 pm: Felix Baumgartner has survived.

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Tue Oct 16, 2012 3:11 pm
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Wed Oct 17, 2012 3:14 pm
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^^ That tickles me. :lol:

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Wed Oct 17, 2012 3:31 pm
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HeatherKay wrote:
^^ That tickles me. :lol:

Ditto though would a cat still land on all four 4 and walk away? :lol:

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Wed Oct 17, 2012 8:50 pm
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Wed Oct 17, 2012 9:35 pm
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Wed Oct 17, 2012 10:21 pm
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Amnesia10 wrote:
HeatherKay wrote:
^^ That tickles me. :lol:

Ditto though would a cat still land on all four 4 and walk away? :lol:

I saw a TV thing about this, the answer is probably yes, at least in terms of the distance fallen. Cats instinctively know how to maximise their shape to minimise their terminal velocity (see how when the cat jumps it spreads itself into a star shape?) and they have very 'springy' arms and legs, which they tuck under themselves at impact to act as shock absorbers. Essentially, cats know how to make the speed at impact slow enough so they can walk away from a fall no matter how high. All comes from them being tree dwellers in the wild before they were domesticated. There's an evolutionary advantage to surviving if you accidentally fall out of the tree.

This means something quite interesting. If you drop a cat from a short distance, it will be fine. if you drop a cat from above a certain height, it will be fine. If you drop a cat from a height between those two, it won't have time to re-orientate itself and spread out it's limbs to brake the fall, so it will probably be hurt.

This was all found out after a vet in New York noticed that all the cats he was seeing coming in with injuries from falling lived with people who had apartments between the second and fifth floors. Above that, the cat has time to 'parachute' and would walk away. Below that, the fall is short enough not to injure them anyway. In between...

According to that study, if you could give the cat an oxygen supply and protect it from the low pressure somehow it could probably fall from even such an extreme distance, without a parachute, and walk away.


Wed Oct 17, 2012 10:44 pm
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jonbwfc wrote:
According to that study, if you could give the cat an oxygen supply and protect it from the low pressure somehow it could probably fall from even such an extreme distance, without a parachute, and walk away.

One for Mythbusters or Redbull? I think that they might have problems throwing a cat, even in a spacesuit, out in space. :lol:

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Wed Oct 17, 2012 10:54 pm
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jonbwfc wrote:
Amnesia10 wrote:
HeatherKay wrote:
^^ That tickles me. :lol:

Ditto though would a cat still land on all four 4 and walk away? :lol:

I saw a TV thing about this, the answer is probably yes, at least in terms of the distance fallen. Cats instinctively know how to maximise their shape to minimise their terminal velocity (see how when the cat jumps it spreads itself into a star shape?) and they have very 'springy' arms and legs, which they tuck under themselves at impact to act as shock absorbers. Essentially, cats know how to make the speed at impact slow enough so they can walk away from a fall no matter how high. All comes from them being tree dwellers in the wild before they were domesticated. There's an evolutionary advantage to surviving if you accidentally fall out of the tree.

This means something quite interesting. If you drop a cat from a short distance, it will be fine. if you drop a cat from above a certain height, it will be fine. If you drop a cat from a height between those two, it won't have time to re-orientate itself and spread out it's limbs to brake the fall, so it will probably be hurt.

This was all found out after a vet in New York noticed that all the cats he was seeing coming in with injuries from falling lived with people who had apartments between the second and fifth floors. Above that, the cat has time to 'parachute' and would walk away. Below that, the fall is short enough not to injure them anyway. In between...

According to that study, if you could give the cat an oxygen supply and protect it from the low pressure somehow it could probably fall from even such an extreme distance, without a parachute, and walk away.

The issue I see with this is whilst a cat could minimise it's velocity at any given altitude, it will still be travelling a lot faster than it normally would when in such thin air. The question would be whether it could slow itself down fast enough in the upon entering denser air (ie. could it slow down at the same rate as the air becomes more dense) and also what would be the effect of increased air resistance on the moggy.

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Thu Oct 18, 2012 7:58 am
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EddArmitage wrote:
The question would be whether it could slow itself down fast enough in the upon entering denser air (ie. could it slow down at the same rate as the air becomes more dense) and also what would be the effect of increased air resistance on the moggy.

Indeed. You could probably assume it's got enough height left when it starts to hit dense atmosphere (say 20,000 ft) for the drag to decelerate it to a 'safe' terminal velocity but the subsidiary question is what happens to all the energy it's got to dump off to reduce from it's must faster 'thin air' TV to it's safe landing 'thick air' TV. You might end up with a slightly toasted cat.

Anyone want to figure out the KE difference between an average domestic housecat doing say 600MPH and 30MPH?


Thu Oct 18, 2012 8:42 am
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jonbwfc wrote:
Anyone want to figure out the KE difference between an average domestic housecat doing say 600MPH and 30MPH?

Assuming the cat is about 4Kg and mostly water, then about 1.6 Terajoules.

That's enough to raise the temperature of a million cats from freezing to boiling, or enough to vaporise it 180 thousand times over.

That cat would need a nice space suit, like the man had.

A lot more energy than I would have guessed - I must be wrong, surely?!

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Thu Oct 18, 2012 9:22 am
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JJW009 wrote:
jonbwfc wrote:
Anyone want to figure out the KE difference between an average domestic housecat doing say 600MPH and 30MPH?

Assuming the cat is about 4Kg and mostly water, then about 1.6 Terajoules.

That's enough to raise the temperature of a million cats from freezing to boiling, or enough to vaporise it 180 thousand times over.

That cat would need a nice space suit, like the man had.

A lot more energy than I would have guessed - I must be wrong, surely?!

A new power source that will sustain mankind forever.

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Thu Oct 18, 2012 12:35 pm
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JJW009 wrote:
A lot more energy than I would have guessed - I must be wrong, surely?!

Ahem - yes I just realised I did do it wrong. That was for 600 miles per second :lol:

:edit:

120 KJ which is enough to warm up one cat by about 7 degrees, not quite vaporising entire feline nations on re-entry :oops:

I bet I've done that wrong again anyway...

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Last edited by JJW009 on Thu Oct 18, 2012 1:26 pm, edited 1 time in total.



Thu Oct 18, 2012 1:03 pm
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JJW009 wrote:
JJW009 wrote:
A lot more energy than I would have guessed - I must be wrong, surely?!

Ahem - yes I just realised I did do it wrong. That was for 600 miles per second :lol:

Cats in spaaaaaacceee...

I believe there possibly is potential in studying cats attached to bungee ropes as a new sustainable power source.


Thu Oct 18, 2012 1:11 pm
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jonbwfc wrote:
JJW009 wrote:
JJW009 wrote:
A lot more energy than I would have guessed - I must be wrong, surely?!

Ahem - yes I just realised I did do it wrong. That was for 600 miles per second :lol:

Cats in spaaaaaacceee...

I believe there possibly is potential in studying cats attached to bungee ropes as a new sustainable power source.

Perpetual motion?

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Thu Oct 18, 2012 1:21 pm
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