750 Miles per Hour...The Speed of Superman / Speeding Bullet

[Snakeman721]

I'm guessing the 1-1.5 mile range stated on ammo boxes and in gun safety classes is for a round shot level over level terrain. After that 1-1.5 miles, the effect of gravity and air resistance would end it's flight. I suppose you could get more distance if you angled the gun up when firing, but then by the time the bullet came down, it would be very near free fall terminal velocity having lost all of it's forward momentum from the propellant charge due to air friction. But then, you guys already knew all this stuff...lol.

[xd ED]

I'm guessing the 1-1.5 mile range stated on ammo boxes and in gun safety classes is for a round shot level over level terrain. After that 1-1.5 miles, the effect of gravity and air resistance would end it's flight. I suppose you could get more distance if you angled the gun up when firing, but then by the time the bullet came down, it would be very near free fall terminal velocity having lost all of it's forward momentum from the propellant charge due to air friction. But then, you guys already knew all this stuff...lol.

The World's Most Popular Hunting Round By Clair Rees
"...with a 50-yard zero, a .22 LR slug dropped 128 inches at 300 yards. At 500 yards, the drop was more than 40 feet!"

[JTHubred]

Well just to throw a little science out there if that bullet is shot vertically it would lose velocity due to gravity though on return would gain acceleration at 9.8 m/s^2 due to gravity which kinda makes one wonder about all those people shooting their rifles in the air in celebration overseas, those rounds gotta return to earth somewhere and what would happen to where they hit.
As for the satellite V. SR-71 in reconnaissance, so we've determined that the SR-71 could have traveled at 2K+ mph, and by Google a satellite can travel at around 6,500+ mph which would get to their destination faster also consider that the SR-71 would have a shorter distance to travel as its moving on a smaller orbit of the Earth while the average satellite travels around 22K+ miles above the earth on a geosynchronous orbit.
My apologies if this is considered a bit off topic though just a thought that came mind reading this thread that I wanted to put out for consideration.

[xd ED]

Well just to throw a little science out there if that bullet is shot vertically it would lose velocity due to gravity though on return would gain acceleration at 9.8 m/s^2 due to gravity which kinda makes one wonder about all those people shooting their rifles in the air in celebration overseas, those rounds gotta return to earth somewhere and what would happen to where they hit.
As for the satellite V. SR-71 in reconnaissance, so we've determined that the SR-71 could have traveled at 2K+ mph, and by Google a satellite can travel at around 6,500+ mph which would get to their destination faster also consider that the SR-71 would have a shorter distance to travel as its moving on a smaller orbit of the Earth while the average satellite travels around 22K+ miles above the earth on a geosynchronous orbit.
My apologies if this is considered a bit off topic though just a thought that came mind reading this thread that I wanted to put out for consideration.

A big factor in the bullet velocity/ accelerations is air resistance. Likely the bullets are tumbling at terminal velocity when they return to earth. The damage and injuries are well documented.
As to the SR-71 vs satellite. I was led to believe the planes advantage over satellites is the strategic placement of the planes, and the fact they can be deployed/ re-directed much more quickly than can a satellite's orbit be modified.

Using your numbers, my quick and dirty calculations say it would take a little over 12 hrs for a SR 71 to circumnavigate the globe @ 100,000 ft vs 25+ hrs for a satellite.
ETA, after doing the math, I looked up the operational altitude...it's actually about 80000 feet so the plane would take a bit less time than my 12 hr number suggests.
Not that this speed comparison is too relevant, due to the deployment strategies of both satellites and the spy plane.

[selurcspi]

Just a thought, a bullet out of your AR15 is actually doing almost 2200MPH, Mach 3, 750MPH isn't scary enough

[JTHubred]

Well just to throw a little science out there if that bullet is shot vertically it would lose velocity due to gravity though on return would gain acceleration at 9.8 m/s^2 due to gravity which kinda makes one wonder about all those people shooting their rifles in the air in celebration overseas, those rounds gotta return to earth somewhere and what would happen to where they hit.
As for the satellite V. SR-71 in reconnaissance, so we've determined that the SR-71 could have traveled at 2K+ mph, and by Google a satellite can travel at around 6,500+ mph which would get to their destination faster also consider that the SR-71 would have a shorter distance to travel as its moving on a smaller orbit of the Earth while the average satellite travels around 22K+ miles above the earth on a geosynchronous orbit.
My apologies if this is considered a bit off topic though just a thought that came mind reading this thread that I wanted to put out for consideration.

A big factor in the bullet velocity/ accelerations is air resistance. Likely the bullets are tumbling at terminal velocity when they return to earth. The damage and injuries are well documented.
As to the SR-71 vs satellite. I was led to believe the planes advantage over satellites is the strategic placement of the planes, and the fact they can be deployed/ re-directed much more quickly than can a satellite's orbit be modified.

Using your numbers, my quick and dirty calculations say it would take a little over 12 hrs for a SR 71 to circumnavigate the globe @ 100,000 ft vs 25+ hrs for a satellite.
ETA, after doing the math, I looked up the operational altitude...it's actually about 80000 feet so the plane would take a bit less time than my 12 hr number suggests.
Not that this speed comparison is too relevant, due to the deployment strategies of both satellites and the spy plane.

Point taken, fair enough. Thanks

[LarryFlew]

Just a thought, a bullet out of your AR15 is actually doing almost 2200MPH, Mach 3, 750MPH isn't scary enough

2435 straight line - 2511 max Sr-71 Mach 3+

[traveler]

So, ah, like, you know, if a guy, you know, shot an AR 15 from the back of, you know, an Sr-71 going, like, 2400 feet per second, like, you know, would the bullet stand still?

[tim]

So, ah, like, you know, if a guy, you know, shot an AR 15 from the back of, you know, an Sr-71 going, like, 2400 feet per second, like, you know, would the bullet stand still?

It wouldn't leave the gun, and the gasses would explode in your face?

[xd ED]

So, ah, like, you know, if a guy, you know, shot an AR 15 from the back of, you know, an Sr-71 going, like, 2400 feet per second, like, you know, would the bullet stand still?

It wouldn't leave the gun, and the gasses would explode in your face?

Worse: because you're going Mach 3-you'd hear it before it happened.

[timwarner]

firing backwards, you're fine, firing forwards you got a problem.

[xd ED]

I wonder what happens at the equator when you shoot east to west vs west to east? Given the earth's surface is moving approx. 1038 mph, or 1522 fps to the east...Can you catch the bullet exiting the barrel? Shoot yourself in the back? spontaneous reloads?
And what about tickets for speeding, or going backwards too fast?

[traveler]

I wonder what happens at the equator when you shoot east to west vs west to east? Given the earth's surface is moving approx. 1038 mph, or 1522 fps to the east...Can you catch the bullet exiting the barrel? Shoot yourself in the back? spontaneous reloads?
And what about tickets for speeding, or going backwards too fast?

If you fire a gun directly on the equator the bullets do not rotate.

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[R.E.T.]

I wonder what happens at the equator when you shoot east to west vs west to east? Given the earth's surface is moving approx. 1038 mph, or 1522 fps to the east...Can you catch the bullet exiting the barrel? Shoot yourself in the back? spontaneous reloads?
And what about tickets for speeding, or going backwards too fast?

But isn't the whole solar system moving?

[xd ED]

I wonder what happens at the equator when you shoot east to west vs west to east? Given the earth's surface is moving approx. 1038 mph, or 1522 fps to the east...Can you catch the bullet exiting the barrel? Shoot yourself in the back? spontaneous reloads?
And what about tickets for speeding, or going backwards too fast?

But isn't the whole solar system moving?

Oh, jeez. Now we're getting onto all that e=mc hammer stuff that is so confuserating.