"If a pellet is fired straight up into the air." According to Murphy it will hit you neighbor's kid's drone and bring it down resulting in an FAA citation and a law suit from your neighbor.
Thank you for replying. While I think I might know what that means... Could I bother you to expound for us in the "cheap seats"?When terminal velocity is reached, aerodynamic drag is equal to pellet weight.Assuming a standard sea level air density and Cd = .32, V = 150 f/s.
Jezze, read Newtons laws of gravity.
After reading this post, I played with a few free-fall calculators on the web. However they do not take into account air resistance, and we also don't know how far up the pellet traveled before falling back to earth. Therefore they are kind of useless here. I'd think air resistance is the most important factor here in determining how fast this (approximately 1 gram) pellet is traveling. Terminal velocity means the constant speed the pellet is falling at once air resistance prevents it from accelerating any faster.I'm pretty sure it will hurt pretty bad if it hits you on the head!
Jezze, read Newtons laws of gravity. Everything falls from the sky at the same speed. Bird poop, pellets, or bricks. How much damage it does has to do with its weight.
Quote from: Duckfish on February 07, 2020, 08:45:06 PMJezze, read Newtons laws of gravity. Everything falls from the sky at the same speed. Bird poop, pellets, or bricks. How much damage it does has to do with its weight.Paratroopers would disagree with your assertion...
I suspect the actual answer to your question is somewhere between difficult and impossible. You have not stated the launch velocity from the gun, the caliber, or the mass of the pellet. These will all have an effect. I have no idea how fast your hypothetical pellet will shed speed on the way up but that will determine the altitude achieved. It may or may not go high enough to achieve actual terminal velocity on the way down. The simplest answer is probably don't try this at home - anyone's home. The effect of gravity on the way up is probably a simple enough physics problem to calculate. It's harder to take into account air resistance on a body as small as a pellet.
Quote from: DevilsLuck on February 07, 2020, 08:49:45 PMQuote from: Duckfish on February 07, 2020, 08:45:06 PMJezze, read Newtons laws of gravity. Everything falls from the sky at the same speed. Bird poop, pellets, or bricks. How much damage it does has to do with its weight.Paratroopers would disagree with your assertion...But not helicopter pilots
Quote from: Duckfish on February 07, 2020, 08:56:26 PMQuote from: DevilsLuck on February 07, 2020, 08:49:45 PMQuote from: Duckfish on February 07, 2020, 08:45:06 PMJezze, read Newtons laws of gravity. Everything falls from the sky at the same speed. Bird poop, pellets, or bricks. How much damage it does has to do with its weight.Paratroopers would disagree with your assertion...But not helicopter pilotsDrag... Ain't it a drag..?
Quote from: DevilsLuck on February 07, 2020, 09:03:35 PMQuote from: Duckfish on February 07, 2020, 08:56:26 PMQuote from: DevilsLuck on February 07, 2020, 08:49:45 PMQuote from: Duckfish on February 07, 2020, 08:45:06 PMJezze, read Newtons laws of gravity. Everything falls from the sky at the same speed. Bird poop, pellets, or bricks. How much damage it does has to do with its weight.Paratroopers would disagree with your assertion...But not helicopter pilotsDrag... Ain't it a drag..?Auto rotate down as far as you can and just pull the collective at the right moment... (grin)