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Old 04-10-2007, 05:40 PM
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If you drop a 150 grain bulletat the same height ofa horizontally aligned rifle, and at the same time fire 150 grain bullet from the rifle, they will hit the ground at the same time........gravity......
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Old 04-10-2007, 05:43 PM
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Assuming of course that the altitude where the bullet ends up is exactly the same as that where they both started and that the bullet doesn't hit anything first!
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Old 04-10-2007, 07:20 PM
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thanks for the info ha ha
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Old 04-10-2007, 07:23 PM
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Hmm...

I guess that is correct. On the same line of thinking 2 bullets fired from 2 different guns horizontally would also drop at the same rate. The reason that one "drops less" than the other at say 400 yards is because it travels that distance in less time. When the first bullet travels the 400 yards in say 2 seconds and has dropped 20" while the second bullet has only traveled 300 yards in the same 2 seconds and has dropped 20" but by the time it gets to 400 yards it will take 2.5 seconds and it will have dropped another 5".


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Old 04-10-2007, 07:55 PM
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alls I knows is that when you pull the trigger it goes boom and a bullet comes out
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Old 04-10-2007, 08:07 PM
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Old 04-10-2007, 08:09 PM
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Correct answer is: NO

For any clarification(s) necessary, contact: etothepi
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Old 04-10-2007, 08:12 PM
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They will land at the same time Only if the one you drop does not have the casing attached still !
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Old 04-10-2007, 10:23 PM
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They will land at the same time Only if the one you drop does not have the casing attached still !
Weight of the bullet has nothing to do with it. Physics states that distance traveled X equals initial velocity * time + 1/2* acceleration * time^2

X=Vo*t+1/2*a*t^2

Because both bullets start at the same height (and assuming they fall the same distance) They would hit the ground at the same time due to the fact both would accelerate at 9.8m/s^2 (remember that the fired bullet has no y-axis velocity at the start only x-axis). To be very technical about it due to the curvature of the earth the bullet fored from the gun should actually hit later because a bullet shot at a tanget path from the earth would end up slightly farther away from earth than at start.
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Old 04-10-2007, 10:40 PM
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your physics equation abovehold true when you neglect fluid dynamics,but i think he meant to say if you assume the ground is 100% flat, neglecting the earths curvature and any altitude change. just from a pure initial velocity, the initial Vo(x) (initial muzzle velocity, has no impacton the gravitational constant. anyways, to answer your Q, NO they will not hit the ground at the same time due to fluid dynamics, look at any bullets trajectory, even one fired in parallel to an assumed "flat" ground. the projectile, will ALWAYS shoot in an arch where its maximum height (y) exceeds that of the muzzle beforeit reaches its "zero". with that in mind, the fired projectile has a further distance to travel to the ground, taking longer than a "dropped bullet"
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