Shooting a bullet up into the air

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SUMMARY

When a bullet is shot straight up into the air, it will return to the ground at a terminal velocity of approximately 90 m/s (about 200 mph), which is the same speed reached by a typical 150 grain bullet according to a 1920 U.S. Army Ordnance study. This velocity is sufficient to cause serious injury or death upon impact, despite being lower than the initial speed when leaving the barrel. The discussion emphasizes the dangers of firing bullets into the air, particularly in calm conditions where air resistance is minimal.

PREREQUISITES
  • Understanding of terminal velocity concepts
  • Basic knowledge of physics related to projectile motion
  • Familiarity with the effects of air resistance on falling objects
  • Awareness of firearm safety and ballistics
NEXT STEPS
  • Research the physics of terminal velocity in different objects
  • Learn about the effects of air resistance on various projectiles
  • Explore the implications of firing firearms in populated areas
  • Investigate historical studies on bullet trajectories and impacts
USEFUL FOR

This discussion is beneficial for physicists, firearm safety instructors, and individuals interested in the effects of projectiles and public safety regarding gun usage.

Towk667
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Given that there is no wind, if you shoot a bullet straight up, when it comes back down will it be going fast enough to kill someone? I know it won't be going as fast as it was leaving the barrel of the gun because of air resistance on its trip back down, but I'm just wondering if it would still be dangerous.
 
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Try:
http://lmgtfy.com/?q=terminal+velocity+bullet

From:
http://en.wikipedia.org/wiki/Terminal_velocity#Examples:
Higher speeds can be attained if the skydiver pulls in his or her limbs (see also freeflying). In this case, the terminal velocity increases to about 320 km/h (200 mph or 90 m/s),[2] which is also the terminal velocity of the peregrine falcon diving down on its prey.[3] And the same terminal velocity is reached for a typical 150 grain bullet traveling in the downward vertical direction — when it is returning to Earth having been fired upwards, or perhaps just dropped from a tower — according to a 1920 U.S. Army Ordnance study.[4]

Also:
https://www.physicsforums.com/showthread.php?t=14560
 
Thanks:approve:
 

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