Re: A question for those interested in physics...
Sandman <m...@sandman.net> wrote in message news:<mr-...@news.fu-berlin.de>... > In article <a7q9p0$n6or0$2...@ID-56786.news.dfncis.de>, Edwin <zer...@aiur.org> > 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.
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