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Old 06-29-2009, 11:40 AM   #1
tsiguy96
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Default physics lesson of the day

if you shoot a bullet parallel to the ground, it will hit the ground the same time as if you dropped a bullet in your hand.

belie dat
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Old 06-29-2009, 11:43 AM   #2
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Quote:
Originally Posted by tsiguy96 View Post
if you shoot a bullet parallel to the ground, it will hit the ground the same time as if you dropped a bullet in your hand.

belie dat
You're leaving out the laundry list of disclosures re: elevation, wind, etc.
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Old 06-29-2009, 11:49 AM   #3
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Quote:
Originally Posted by tsiguy96 View Post
if you shoot a bullet parallel to the ground, it will hit the ground the same time as if you dropped a bullet in your hand.

belie dat
In theory, it will do so, but only in a perfect vacuum when the bullet is fired exactly parallel to the ground. The reason is that the force of gravity is a constant, so the bullet will be pulled down vertically at the same speed, regardless of its horizontal speed. The reason for my caveats are that, in a vacuum, there is no air friction, which might tend to affect the fired bullet more than the falling bullet, nor any ability to for the fired bullet to rise aerodynamically (like the wing of an airplane).

http://wiki.answers.com/Q/Will_a_bul..._the_same_time
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Old 06-29-2009, 12:00 PM   #4
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Quote:
Originally Posted by Pony Boy View Post
In theory, it will do so, but only in a perfect vacuum when the bullet is fired exactly parallel to the ground. The reason is that the force of gravity is a constant, so the bullet will be pulled down vertically at the same speed, regardless of its horizontal speed. The reason for my caveats are that, in a vacuum, there is no air friction, which might tend to affect the fired bullet more than the falling bullet, nor any ability to for the fired bullet to rise aerodynamically (like the wing of an airplane).

http://wiki.answers.com/Q/Will_a_bul..._the_same_time
Effects that would change the result:

Rotation of the bullet
Drag/friction (if the bullet is not 100% symmetric)
Curvature of the earth
Asymmetry of the bullet (could see some Bernoulli effect if the bullet is not symmetrical)
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Old 06-29-2009, 12:01 PM   #5
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Quote:
Originally Posted by gyldenlove View Post
Effects that would change the result:

Rotation of the bullet
Drag/friction (if the bullet is not 100% symmetric)
Curvature of the earth
Asymmetry of the bullet (could see some Bernoulli effect if the bullet is not symmetrical)
This is because of the metric system isn't it?
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Old 06-29-2009, 12:03 PM   #6
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What about muzzle velocity? A round from a .45 is coming down faster than a round from a 30.06
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Old 06-29-2009, 12:05 PM   #7
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What about muzzle velocity? A round from a .45 is coming down faster than a round from a 30.06
Not coming down faster. But coming down farther away.
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Old 06-29-2009, 12:08 PM   #8
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This is because of the metric system isn't it?
Absertively.
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Old 06-29-2009, 12:13 PM   #9
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if you stand on toilet, you're high on pot
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Old 06-29-2009, 12:27 PM   #10
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If the shooter is cross eyed, then the bullet you dropped will hit first.
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Old 06-29-2009, 12:37 PM   #11
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Actually the answer is B. By the length of the muzzle.
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Old 06-29-2009, 12:40 PM   #12
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Quote:
Originally Posted by Pony Boy View Post
In theory, it will do so, but only in a perfect vacuum when the bullet is fired exactly parallel to the ground. The reason is that the force of gravity is a constant, so the bullet will be pulled down vertically at the same speed, regardless of its horizontal speed. The reason for my caveats are that, in a vacuum, there is no air friction, which might tend to affect the fired bullet more than the falling bullet, nor any ability to for the fired bullet to rise aerodynamically (like the wing of an airplane).

http://wiki.answers.com/Q/Will_a_bul..._the_same_time
Yep.....only in a vacuum
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Old 06-29-2009, 12:50 PM   #13
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Yep.....only in a vacuum
If the ball is entirely symmetric and not rotating at all you can relax the vacuum condition to just require air with absolutely homogeneous motion.
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Old 06-29-2009, 01:06 PM   #14
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Quote:
Originally Posted by Beantown Bronco View Post
You're leaving out the laundry list of disclosures re: elevation, wind, etc.
Elevation, wind, flatness of ground, curvature of earth, temperature of air in transit all will affect when the shot bullet hits the ground and it is unlikely that it will hit at the same time as the bullet dropped from the hand at the same height.

That being said, in a gravitional field, in a vacuum with perfectly level ground, what he says is true.
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Old 06-29-2009, 01:08 PM   #15
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If you shoot a bullet into the ground at the same time you drop it the shot bullet will get there first.
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Old 06-29-2009, 01:15 PM   #16
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Quote:
Originally Posted by Pony Boy View Post
In theory, it will do so, but only in a perfect vacuum when the bullet is fired exactly parallel to the ground. The reason is that the force of gravity is a constant, so the bullet will be pulled down vertically at the same speed, regardless of its horizontal speed. The reason for my caveats are that, in a vacuum, there is no air friction, which might tend to affect the fired bullet more than the falling bullet, nor any ability to for the fired bullet to rise aerodynamically (like the wing of an airplane).

http://wiki.answers.com/Q/Will_a_bul..._the_same_time
Who told you gravity is constant?

Gravity fluctuates on Earth, as it does everywhere else. Minutely sure, but gravity is less at the poles than it is at the equator. The reason is that due to the earth's rotation the earth bulges at the center and there is more mass at the equator than at the poles which creates a slightly greater gravitational pull than near the poles.

And when the moon is directly overhead, gravity is less as well as the moon's gravity pulls things away from the planet while Earth's gravity pulls it back. Earth's gravity is much greater than the moon but the effect remains as can be seen in the tides.
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Old 06-29-2009, 01:16 PM   #17
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Well...at lunch I went home and dropped a bullet and fired one in my vaccum and I really couldn't tell the different. Now my toliet is stopped up and my vaccuum cleaner is broken.
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Old 06-29-2009, 01:25 PM   #18
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The 30.06 will drop someone from 300 yards.

Except the Terminator.
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Old 06-29-2009, 01:36 PM   #19
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If you shoot the bullet perpendicular to the ground, you have a 75.891% chance of shooting yourself in the groin...


Sincerely,

Plaxico Burress
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Old 06-29-2009, 01:37 PM   #20
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If you shoot the bullet perpendicular to the ground, you have a 75.891% chance of shooting yourself in the groin...


Sincerely,

Plaxico Burress

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Old 06-29-2009, 01:38 PM   #21
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Quote:
Originally Posted by Smiling Assassin27 View Post
If you shoot the bullet perpendicular to the ground, you have a 75.891% chance of shooting yourself in the groin...


Sincerely,

Plaxico Burress
best post yet.
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Old 06-29-2009, 01:50 PM   #22
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No comment

It kinda dispells the what falls fastest argument tho.

Last edited by watermock; 06-29-2009 at 02:00 PM..
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Old 06-29-2009, 01:50 PM   #23
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Quote:
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Well...at lunch I went home and dropped a bullet and fired one in my vaccum and I really couldn't tell the different. Now my toliet is stopped up and my vaccuum cleaner is broken.
You must be following the patented "baja diet".
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Old 06-29-2009, 01:54 PM   #24
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Quote:
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You're leaving out the laundry list of disclosures re: elevation, wind, etc.

Muzzle velocity size and weight of bullet and ground contours etc...
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Old 06-29-2009, 03:00 PM   #25
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If Orton fires a football from the one yard line at the north end zone and Cutler fires a ball from the one yard line of the south end zone which one will cross the 50 yard line first and does altitude and alcohol have any effect on the results.
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