Meanwhile in America

apeman
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Re: Meanwhile in America

Post by apeman » Fri Jun 30, 2017 1:10 pm

DBTrek wrote:The lengths you'll go to in order not to appreciate a cool piece of niche technology.
Your commitment is remarkable.
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:lol: :lol: :lol:

Smitty-48
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Re: Meanwhile in America

Post by Smitty-48 » Fri Jun 30, 2017 1:14 pm

When it comes to niche, I think the S&W 500 Magnum is way cooler, just sayun'

Nec Aspera Terrent

Okeefenokee
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Re: Meanwhile in America

Post by Okeefenokee » Fri Jun 30, 2017 9:30 pm

GrumpyCatFace wrote:
The Conservative wrote:
DBTrek wrote:
Well . . . that's disappointing.
Velocity doesn't always mean better.

BMG is 1,219 m/s muzzle velocity
DE is 470 m/s muzzle velocity

Almost a 1/3 difference.
F = MA
muzzle velocity is the speed the bullet leaves the barrel. no acceleration after that point.

it's not force, but kinetic energy that you need to measure.

KE = MV^2

and velocity does have a significant affect there.
GrumpyCatFace wrote:Dumb slut partied too hard and woke up in a weird house. Ran out the door, weeping for her failed life choices, concerned townsfolk notes her appearance and alerted the fuzz.

viewtopic.php?p=60751#p60751

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SuburbanFarmer
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Re: Meanwhile in America

Post by SuburbanFarmer » Fri Jun 30, 2017 10:52 pm

Okeefenokee wrote:
GrumpyCatFace wrote:
The Conservative wrote:
Velocity doesn't always mean better.

BMG is 1,219 m/s muzzle velocity
DE is 470 m/s muzzle velocity

Almost a 1/3 difference.
F = MA
muzzle velocity is the speed the bullet leaves the barrel. no acceleration after that point.

it's not force, but kinetic energy that you need to measure.

KE = MV^2

and velocity does have a significant affect there.
I'm suggesting that the mass of the bullet probably plays a significant role here, as much as the speed.
SJWs are a natural consequence of corporatism.

Formerly GrumpyCatFace

https://youtu.be/CYbT8-rSqo0

Okeefenokee
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Re: Meanwhile in America

Post by Okeefenokee » Fri Jun 30, 2017 11:48 pm

GrumpyCatFace wrote:
Okeefenokee wrote:
GrumpyCatFace wrote:
F = MA
muzzle velocity is the speed the bullet leaves the barrel. no acceleration after that point.

it's not force, but kinetic energy that you need to measure.

KE = MV^2

and velocity does have a significant affect there.
I'm suggesting that the mass of the bullet probably plays a significant role here, as much as the speed.
you didn't do well in physics, did you?

the kinetic energy of the round is the product of the mass of the round and the velocity squared.

any increase in the velocity has the same effect as the square root of the same increase in the mass.

KE = M * V^2

10 gram bullet at 500 m/s = .01 * 500^2 = 2500 J

double the mass of the round,

20 gram bullet at 500 m/s = .02 * 500^2 = 5000 J

double the velocity,

10 gram bullet at 1000 m/s = .01 * 1000^2 = 10,000 J

Doubling the mass doubles the energy. Doubling the velocity quadruples the energy.

Velocity matters more.

Image
GrumpyCatFace wrote:Dumb slut partied too hard and woke up in a weird house. Ran out the door, weeping for her failed life choices, concerned townsfolk notes her appearance and alerted the fuzz.

viewtopic.php?p=60751#p60751

Okeefenokee
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Re: Meanwhile in America

Post by Okeefenokee » Sat Jul 01, 2017 12:02 am

When the bullet leaves the barrel, its acceleration stops.

Using the equation for force, F = MA, the force is zero. The bullet is in free fall with nothing but inertia to carry it before it hits the ground.

It's kinetic energy which matters then, which is why rail guns exist. Tiny bullet at high speed has more energy than big bullet at low speed.
GrumpyCatFace wrote:Dumb slut partied too hard and woke up in a weird house. Ran out the door, weeping for her failed life choices, concerned townsfolk notes her appearance and alerted the fuzz.

viewtopic.php?p=60751#p60751

heydaralon
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Re: Meanwhile in America

Post by heydaralon » Sat Jul 01, 2017 11:07 am

If you run backwards really really fast you could outrun the bullet. The problem is that it is very difficult to outrun a bullet without proper training. We are talking about doing several 5ks a year to get prepared. Not for the faint of heart.
Shikata ga nai

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Speaker to Animals
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Re: Meanwhile in America

Post by Speaker to Animals » Sat Jul 01, 2017 4:23 pm

He's an IT slave, Okie. Don't be harsh on him. He didn't have to take calculus and physics for engineers. If he took those at all, they were the survey course versions.

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clubgop
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Re: Meanwhile in America

Post by clubgop » Sat Jul 01, 2017 4:31 pm

GrumpyCatFace wrote:
Okeefenokee wrote:
GrumpyCatFace wrote:
F = MA
muzzle velocity is the speed the bullet leaves the barrel. no acceleration after that point.

it's not force, but kinetic energy that you need to measure.

KE = MV^2

and velocity does have a significant affect there.
I'm suggesting that the mass of the bullet probably plays a significant role here, as much as the speed.
Gun grabber math, everyone!

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SuburbanFarmer
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Re: Meanwhile in America

Post by SuburbanFarmer » Sat Jul 01, 2017 4:35 pm

Speaker to Animals wrote:He's an IT slave, Okie. Don't be harsh on him. He didn't have to take calculus and physics for engineers. If he took those at all, they were the survey course versions.
I definitely did not take any kind of physics, except for electrical.

But I do know that where 2 objects are moving the same speed, the one with more mass will hit harder.
SJWs are a natural consequence of corporatism.

Formerly GrumpyCatFace

https://youtu.be/CYbT8-rSqo0