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Re: raining bullets

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RichD <r_delaney2001@yahoo.com> wrote:
> In Physics 101, they teach that a bullet falls at the same rate 
> it rises, it's gravity etc.  Hence laws against firing into the sky.
> But in the real world, there's air resistance, in both directions.  
> Question:  at what speed does a bullet actually hit the earth?  
> Assume .38 Special, if it matters.
> --
> Rich


A simplified version is:
http://hyperphysics.phy-astr.gsu.edu/hbase/airfri2.html#c3

It depends critically on the angle. The 2nd safest is to fire
straight up so the falling bullet will actually reach terminal velocity
on the way down.
Obviously if you fire up at e.g. 45 deg angle you can hurt someone at the 
other end.

The difficult part is falling bullets aren't very good approximations of
spheres. They don't fall nose or tail down, but tumble end over end at
high speed and can be subject to a lot more drag than a same 
size/weight sphere.

To simplify the calculations, get rid of the 38 and use a scatter gun instead.

-- 
That's awkward: Temperatures near record high 
	for first "cold-weather" Super Bowl
SportingNews.com
2 Feb 2014
The National Weather Service said that temperatures for Sunday's NFL
title game at MetLife Stadium between the Denver Broncos and Seattle
Seahawks were 10 to 15 degrees above normal, and just nine degrees
below the record high of 62 set in 1973.

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raining bullets RichD <r_delaney2001@yahoo.com> - 2015-10-30 16:50 -0700
  Re: raining bullets R Kym Horsell <kym@kymhorsell.com> - 2015-10-31 00:10 +0000
  Re: raining bullets Fabian Russell <root@localhost.localdomain> - 2015-10-31 00:38 +0000
  Re: raining bullets jimp@specsol.spam.sux.com - 2015-10-31 00:40 +0000
    Re: raining bullets Sam Wormley <swormley1@gmail.com> - 2015-10-30 20:13 -0500
      Re: raining bullets benj <nobody@gmail.com> - 2015-10-30 21:39 -0400
      Re: raining bullets jimp@specsol.spam.sux.com - 2015-10-31 02:19 +0000
        Re: raining bullets Sam Wormley <swormley1@gmail.com> - 2015-10-30 21:39 -0500
          Re: raining bullets jimp@specsol.spam.sux.com - 2015-10-31 03:38 +0000
  Re: raining bullets "reber g=emc^2" <herbertglazier0@gmail.com> - 2015-10-31 13:02 -0700
    Re: raining bullets Double-A <double-a3@hush.com> - 2015-11-01 13:46 -0800

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