3 ways of finding muzzle velocity?

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SUMMARY

The discussion focuses on calculating muzzle velocity using projectile motion principles. The key equation utilized is s = ut + 1/2at², where 's' represents the vertical drop, 'u' is the initial vertical velocity (zero in this case), 'a' is the acceleration due to gravity, and 't' is the time of flight. The user is advised that while time is not directly measured, it can be derived from the drop distance using the formula s = 1/2gt². The vertical and horizontal motions of the projectile are independent, allowing for the calculation of muzzle velocity based solely on the drop distance.

PREREQUISITES
  • Understanding of basic physics concepts, particularly projectile motion.
  • Familiarity with kinematic equations, specifically s = ut + 1/2at².
  • Knowledge of gravitational acceleration (approximately 9.81 m/s²).
  • Ability to perform algebraic manipulations to solve for unknown variables.
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  • Research how to derive time of flight from vertical drop distance in projectile motion.
  • Learn about the independence of horizontal and vertical motion in projectile dynamics.
  • Explore practical applications of muzzle velocity calculations in ballistics.
  • Investigate advanced projectile motion equations for varying launch angles.
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Students studying physics, educators teaching projectile motion, and hobbyists interested in ballistics and projectile analysis.

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Homework Statement


I have been measuring the drop over varying distances of a projectile that was fired horizontally. I have measured the drop(s) of shot from the horizontal. while recording the distances to the target.

Homework Equations


I have been told to use s=ut+1/2at^2

The Attempt at a Solution


accelartion=gravity
s=1/2gt^2.
The suggested formula uses time, and i don't have the times recorded, is there a way round or do i need time?
 
Physics news on Phys.org
The distance of the horizontal barrel from the ground is s. Knowing s you can solve for the time, t for the bullet to hit the ground. The motion of the bullet in the vertical direction is completely independent to the horizontal motion of the bullet. The vertical motion is only influenced by gravity and is similar to just dropping the bullet from the height of the barrel from the ground.
 

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