Oldbloke wrote: the resistance presented to movement by the air is proportional to the surface of the moving object.
Die Judicii wrote:Oldbloke wrote: the resistance presented to movement by the air is proportional to the surface of the moving object.
So what yer sayin is,,,,,, If a woman were to fall off a skyscraper,, and spread her legs,,, she'd slow down before hitting the pavement ?
Thanks for all the input fellas.
sungazer wrote:OB you are correct it is all about the weight of the projectile. They all fall at the same speed it is the weight that determines the energy that is imparted on hitting the ground / head , building ect.
Oldbloke wrote:Yeah, that's it, terminal velocity is not that high. But heavier bullets at a given velocity have greater energy and there for more dangerous. The small stuff like. 22 & smaller are unlikely to do a lot of damage. A 180gr would be a problem.
sungazer wrote:What I meant OB was it doesnt take much of a rifle to shoot a bullet up 1500 ft in the air. If you can do this it will achieve terminal velocity on the way down and all of them will be pretty much the same speed (300fps) give or take on their drag.
Gaznazdiak wrote:I remember a very convincing demonstration of area fire by an M60 mounted on a C2 Sight at Singleton in the 70's.
Using map coordinates they slaughtered an acre of innocent balloons from the other side of a large hill.
Can't remember the max effective range for the 60 used this way but my aging memory suggests it was 8 miles.