X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: f996b,53f9f7cceb4d817f X-Google-Attributes: gidf996b,public X-Google-ArrivalTime: 2002-03-28 05:39:53 PST Path: archiver1.google.com!postnews1.google.com!not-for-mail From: jwhal@canada.com (jwhal) Newsgroups: alt.ascii-art Subject: Re: A question for those interested in physics... Date: 28 Mar 2002 05:39:52 -0800 Organization: http://groups.google.com/ Lines: 28 Message-ID: References: NNTP-Posting-Host: 198.164.127.101 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8bit X-Trace: posting.google.com 1017322793 2683 127.0.0.1 (28 Mar 2002 13:39:53 GMT) X-Complaints-To: groups-abuse@google.com NNTP-Posting-Date: 28 Mar 2002 13:39:53 GMT Xref: archiver1.google.com alt.ascii-art:16342 Sandman wrote in message news:... > In article , Edwin > wrote: > > > > Not only does the bullet fall back down, but when it hits the ground, > > > it's travelling at roughly the same speed as when it left the gun > > > (minus a little for air resistance). I'm pretty sure people have been > > > killed this way. > > > > No, the force of gravity acting on a few ounces of lead can't accelerate it > > to the same velocity it had by being fired out of the gun. If it could, > > you'd never be able to fire the bullet straight up. The forces would be > > equal. > > That's true. With the force of gravity, everything falls at the same speed, > which is about 7 meter per second or something like that (hey, I can't > remember everything!:) That would be 9.81 m/s2 << squared. > > When the bullet looses momentum, it will begin to fall, and only accelerate > to the speed gravity allows it, which is the same for everything, be it a > bullet or a bus (give and take for air resistance). > > Now, at this speed, I'm sure someone could get -hurt- but a bullet, but > seriously injured or killed is unlikely.