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22. lr velocity
dearchaser
Member Posts: 107 ✭✭
A question for you physic's majors. I'm a squirrel hunter who uses a .22 cal rifle (40 grain hp bullet). I shoot at squirrels only on the ground, believing it too dangerous to shoot up into the tree in case of a miss (not that I've ever missed!!). Am I correct? What would be the velocity of a .22 bullet returning to earth after being fired straight up or nearly straight? Would air friction be sufficient to render it non-dangerous? I suspect there is more to it than just figuring 32 feet per second per second. Thanks.
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Hope this helps, e-mail me back if you have another question.
"If it's brown, it's down"
Here we go. All falling objest, NO power or Thrust,
will reach terminal volocity. This is the speed at which gravitational force and friction from moving through the air, equalize, 157.255 mph. The mathmatical equation is relatively simple.
The grvitational accelaration of the falling object is 5.41 feet per sec/per sec, the accelaration is arrested when air pressure below the object reaches a displacement of 5.413 inches of water across the surface of the object. This is constant regardless of the wieght of the object. However, this does not nessesarily to living creatures, as they have the ability to change their areodynamics and dynamic drag coefient. This criteria applies however to all inaniment falling objects. Therefore, given the small mass of a .22 cal. bullet, falling at terminal volocity it would not be fatal, however it would give a person a nice goose egg if it hit them on the head. This becomes a mute point if one adheres to the first rule of target acquicition, Know your target and what is beyond it.