1. Re: bullet code (was ICONS - dead horse)
- Posted by Kat <gertie at ZEBRA.NET>
Feb 07, 2000
-
Last edited Feb 08, 2000
----- Original Message -----
From: Everett Williams <rett at GVTC.COM>
To: <EUPHORIA at LISTSERV.MUOHIO.EDU>
Sent: Monday, February 07, 2000 8:15 PM
Subject: Re: bullet code (was ICONS - dead horse)
> On Mon, 7 Feb 2000 20:27:45 -0500, David Roach <roachd_76 at YAHOO.COM>
wrote:
>
> >I gues I did George but do you agree with me that an object can not
> >fall 999.5 feet/s.
Actually, if you launch it up at 1000fps, and neglecting air resistance, it
will be falling at 1000fps when it lands at your feet. I doubt a bullet will
do this, but a depleted uranium arrow with a plain nose and minimal
fletching prolly will return energy upon landing pretty equal to the launch
energy. Doing this experiment on the moon or Mars should return the launch
energy on impact. I'm not guessing where you have set your shoot-`em-up
game.
> >http://www.glenbrook.k12.il.us/gbssci/phys/Class/vectors/u3l2e.html
> >Here is where I have found all of my info. If I am missing something.
> >Please tell me. My program is dependant of these equations. Thank you.
> >
> >roachd_76
>
> Get a CRC handbook. These questions have been settled at this level for
> several hundred years. The equations that you are using do not correct
> for atmospheric friction. Atmospheric friction is not relevant to slow
moving
> objects,
Actually, it is, under a certain threshold or weight/size, stationary wings
are very inefficent and flapping wings become the best way to get around.
And under yet another threshold, the wings needn't be streamlined or
"airfoil-shaped" to be the best way to get around, the air is like viscus
pudding. DARPA is still funding this sort of research.
> but is highly relevant to objects in this speed range...approximately
> 681 miles per hour...close to the speed of sound at sea level...above it
> at higher altitudes. Without atmosphere considerations, 999.5 fps is not
an
> excessive speed.
Even with atmosphere, most rifles have exit muzzle velocities in excess of
1000fps.
Kat,
been reading again lately.
