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Stephen Fry - Bullet Question

ReverendTed says...

>> ^rottenseed:
>> ^oxdottir:
I think you need quite a tall rooftop for this to be true.
>> ^rottenseed:
The harder thing to understand would be if I told you that if you fired a bullet from a rooftop straight down to the ground, or you fired it at an upward angle, due to the conservation of energy, both bullets would have to be travelling at the same velocity magnitude when they hit the ground (although direction at impact would be different, obviously).


nope...be it an inch or 100 stories
Ug + KE(initial) = KE(final) for both scenarios the potential energy do to being on a roof and the velocity of the bullet leaving the gun are the same. As long as the mass of the bullets are the same, it'll land with the same velocity. (Trust me when I first heard that I did the brute force kinematic equations to solve this problem and it is in fact the same velocity.)

If I'm not mistaken, this also holds true for a bullet fired at a downward angle as well. (Since the upward angle bullet eventually becomes an identical downward angle bullet once it crosses back beyond the level from which it was fired.)
Of course, the confusing thing in the problem, if I understand correctly, is that velocity magnitude at impact is identical, while downward velocity will be less for the angled bullet.

Stephen Fry - Bullet Question

rottenseed says...

>> ^oxdottir:
I think you need quite a tall rooftop for this to be true.
>> ^rottenseed:
The harder thing to understand would be if I told you that if you fired a bullet from a rooftop straight down to the ground, or you fired it at an upward angle, due to the conservation of energy, both bullets would have to be travelling at the same velocity magnitude when they hit the ground (although direction at impact would be different, obviously).


nope...be it an inch or 100 stories

Ug + KE(initial) = KE(final) for both scenarios the potential energy do to being on a roof and the velocity of the bullet leaving the gun are the same. As long as the mass of the bullets are the same, it'll land with the same velocity. (Trust me when I first heard that I did the brute force kinematic equations to solve this problem and it is in fact the same velocity.)

Rising Folk Star Taylor Mitchell Killed By Coyotes!

rougy says...

I'm pretty sure they shot one of the coyotes involved, but my spirit guide forbids me from using her as a reference.

But seriously, this really hit me, too, for some reason. The poor girl had everything going for her. And that's a really shitty way to die. I know that most ways to die are shitty ways, but being somethings meal du jour...ug.

My family used to hunt coyotes back in the 1970's, and it takes about five dogs to take down one coyote, just to put some perspective on how tough they are.

And I have a very active imagination, but if you listen to that first song on her MySpace page, it's kind of creepy, considering the way she died.

A girl sings the "Diva Dance" from the Fifth Element

This Is Why You're Fat

rottenseed says...

>> ^aceofkidneys:
ug,i fyou guys understood nutrition, you would know that this makes one less fat then the average sandwich. Likely more unhealthy, yes, but more fattening, no, this contains very little carbs, which are the cause of the fattening

Wow put down the south beach diet book and do some actual research. Sitting on your ass inhaling ho-hos is fattening. Intaking 858 fat and protein calories in one meal...won't break your belt in a day, but if you plan on using that protein, you need carbs in your diet. They say about 2 grams of carbs per 1 gram of protein.

This Is Why You're Fat

aceofkidneys says...

ug,i fyou guys understood nutrition, you would know that this makes one less fat then the average sandwich. Likely more unhealthy, yes, but more fattening, no, this contains very little carbs, which are the cause of the fattening

Christian Girl, Frantic after Father Threatens to Kill Her

vairetube says...

next time if you're trying to piss your father off..... just go on a date with a white guy... or, in her case.. a date, period... ... ug what a mess.

hmmmm.... "i told my parents i refused to do something, than ran away and cried about it".

what a unique and tragic teenage story, never before having occurred in history.

Echolocation teenager died =( =(

vairetube says...

hehe payback on the razors edge! true enough so far . though bernie mac was the man too.

seemed like a pleasant and focused invididual. extra sad to have recurrence take him... so fucking cruel to destroy everything regained.. ug.

here's to stem cells and nanotech eventually biting a big chunk out of cancer's ass and spitting it in cancer's face. fucking son of a bitch cancer.

The Decemberists - The Rake's Song

Bruins Hockey Rules - Never Date Within Your Division

Bruins Hockey Rules - Never Date Within Your Division

Giant Octopus attacks Submarine

Best Description Of Republicans EVER!

Dennis Kucinich-lets move from bank care to health care

vairetube says...

Ug QM. Just what is your purpose?

Frankly, yes is the answer to all your questions.

Everything should be the opposite of what you think and we should all die because of it and then you can be right until you break your glasses and can't read and scream "its not fair! there was time now!!!" waaaahhhh

McCain and Palin Set to Music and Harmonized (by Henry Hey)



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