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The Magic Cafe Forum Index » » Not very magical, still... » » I Shot a Gun Into the Air... (0 Likes) Printer Friendly Version

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kcg5
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who wants four fried chickens and a coke
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I think they did Bill, I'm gonna check it out.
Nobody expects the spanish inquisition!!!!!



"History will be kind to me, as I intend to write it"- Sir Winston Churchill
kcg5
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http://www.youtube.com/watch?v=TDB838Vi6hw

not sure where they got the english announcer...
Nobody expects the spanish inquisition!!!!!



"History will be kind to me, as I intend to write it"- Sir Winston Churchill
danielellis_5
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Yet again the mythbusters answer some of the most important questions in life

you gotta love em
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Cliffg37
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Sorry I'm late guys.
Here is the answer.

A shotgun has an average muzzle velocity of about 1200 feet per second. This would mean that firing straight up, the shot would reach zero velocity and maximum height at 37.5 seconds. It will then take the same amount of time to return to the ground.

The reason that this is NOT true, (it would be for a cannon or rifle) is that the charge that fires a shot gun, by definition is highly spread around. The energy is spread not only to the individual pellets, but also into the air at the end of the barrel.

Next we have air resistance. Rifle bullets are designed to minimize air resistance by their shape. Shotgun pellets are not. Also remember a shot gun is primarily a short range weapon.

This is why the pellets do not go as high as they would being slowed only by gravity (22,500 feet)

Taking all the other factors into account, I have to conclude that the pellets fired straight up, probably make it less than 100 feet. This is why hunters can get a shower of their own pellets after about 5 seconds.

Any questions?

Class dismissed
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Vandy Grift
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I still say eight seconds. lol!

Thanks for clearing that up Professor!

Would the shot type make a difference? Lead vs Steel vs Bismuth etc?
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kregg
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It all depends on your powder to birdshot ratio. Too much powder would vanish a bird. The further away from the barrel the wider the fan (the earths rotation is a small factor ... it's coming down everywhere). Think confetti canon.
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Steve_Mollett
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"Any questions?"

Would this be shot designed to bring down an AFRICAN or EUROPEAN swallow carrying a coconut?
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Cliffg37
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Looking at the talons and sizes of both kinds of swallow, I would conclude that neither could really carry a coconut. However, just to be sure, I would offer you to ask your biology teacher for verification. A physics teacher is fine for projectile motion, but not for ornithology.
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Cliffg37
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Vandy, the size and type of shot makes no difference at all as far a gravity is concerned. Fir air resistance, bigger and heavier will cause a slower rise, therefore a quicker return to ground time. Also, larger shot will disperse the energy of the gun more quickly.
Magic is like Science,
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kcg5
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Steve, is that a python reference?
Nobody expects the spanish inquisition!!!!!



"History will be kind to me, as I intend to write it"- Sir Winston Churchill
Daniel Santos
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Quote:
On 2008-09-18 19:08, Cliffg37 wrote:
Looking at the talons and sizes of both kinds of swallow, I would conclude that neither could really carry a coconut.



"It's not a question of where he grips it! It's a simple question of weight ratios! A five ounce bird could not carry a 1 pound coconut."
If it is to be, it is up to me.
balducci
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Quote:
On 2008-09-18 19:10, Cliffg37 wrote:
Vandy, the size and type of shot makes no difference at all as far a gravity is concerned. Fir air resistance, bigger and heavier will cause a slower rise, therefore a quicker return to ground time. Also, larger shot will disperse the energy of the gun more quickly.

If air resistance makes for a slower rise, wouldn't it also make for a slower fall?
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Josh Riel
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There's shotgun, then there is shotguns. There are shells then there are shells. There is shot then there is shot.

Is it high base, or low base shells (Relevant when discussing what bird is being shot at). Bismuth, and steel are much lighter than lead, difference in fps. There is no being certain of a powder charge, diffferent manufacturers. Larger shot will travel farther, and have a smaller pattern. Chokes are different, but I don't kow how much difference the pattern would make.

That question, even when just for 20 guage, is nearly inpossible to be exact.
Many variables.

When I've been rained on, I'd guess it is 8-20 seconds. It's like someone droping a few small bits of gravel on you.

But what do I know.
Magic is doing improbable things with odd items that, under normal circumstances, would be unnessecary and quite often undesirable.
Josh the Superfluous
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You'd probably have a better chance of running from the falling shot than you would hunting with Dick Cheney.
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