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The above description takes place aboard a jet fighter. The same goes for sound waves why would you be able to hear yourself speak if you were traveling faster then the speed of sound?

2006-06-15 12:37:04 · 15 answers · asked by quest 1 in Science & Mathematics Astronomy & Space

15 answers

As Ben Kenobi told Luke, "You must learn the Force."

You must learn the term Frame of Reference.

If you are on the jet doing 3000fps. How fast are YOU moving with respect to your frame of reference. Answer ZERO! Things are coming at your frame of reference at 3000fps.

So if you fired the gun, the bullet would leave the muzzle at 3000 fps from YOUR frame of reference. From an object straight in front of the plane that you were shooting at, would see the bullet coming at them at 6000ft per second plus whatever velocity they had moving toward you.

Get it? Think from the frame of reference!

You can do it in your car. At 60mph on the speedometer, what is your speed from your frame of reference. Zero! However, that possum in the middle of the road is coming at you at 60mph from YOUR frame of reference. From the possum's frame of reference he (or she) is moving at zero. However, the car is coming at the possum at 60mph.

As for the sound waves, the same principle holds. They move away from you at 1100 ft/sec from YOUR frame of reference. You would hear yourself immediately.

Hope this explains it.

2006-06-15 15:13:29 · answer #1 · answered by cat_lover 4 · 1 0

Yes the bullet will leave the gun. Its speed will be 6000 fps relative to ground and 3000 fps relative to jet. The bullet is already travelling with the speed of 3000 fps inside the rifle, its speed will increase by the force provided by the bullet.
You won't be able to hear yourself if flying faster than sound because the sound created will have no initial velocity.

2006-06-15 12:43:25 · answer #2 · answered by Taimoor 4 · 0 0

Fortunate for the squirrel you tried to shoot that popped up right behind you, the bullet just fell to the ground in front of him. However, the shock wave from the leading edge of the aircraft, has rupture the lungs of the poor creature, and he will expire soon.

About hearing yourself speak, well, if your head is sticking out the window of the plane, you would not be able to hear yourself speak, beside the fact that the resistance of the air would elevate the temperature around your head quite rapidly, turning it to carbon (your head that is). The question of hearing yourself becomes moot at that point I guess.

You are probably interested in local relativity, but have not grasped the scales involved. The velocities involved would need to be significant fractions of the speed of light, which is ~ 900,000,000 fps. Get a faster jet.

2006-06-15 12:58:10 · answer #3 · answered by Karman V 3 · 0 0

Yes, the bullet leave the gun at an additional 3000fps. As far as talking in a supersonic jet, you can hear yourself just fine. The sound leaving your mouth is traveling at the same speed you are.

You may be getting confuse over the discussion about the headlight in front of a spaceship traveling at the speed of light. For practical discussions, the speed of light has an absolute speed limit, not bullets, not sound.

2006-06-15 12:44:43 · answer #4 · answered by Vince M 7 · 0 0

If you fired your gun in a different direction, the bullet would have no trouble leaving. Also, if both you and your target are on the jet fighter, you would have a greater chance of hitting it. Also, the sound of your voice travels through your skull, so if there isn't any sound drowning it out you should be able to hear yourself.

2006-06-15 12:55:57 · answer #5 · answered by Anonymous · 0 0

It's the same concept why fighter jets can fire rockets/missles. Frame of reference. It's cool to read about.

2014-07-17 18:46:01 · answer #6 · answered by Jake 2 · 0 0

if you fired tyhe gun in the same direction you were traveling...you would have thew bullet be a projectile traveling at around 6000 fps...cosidering there were no other opposing factors: i.e. in a vacuum, where magically, gunpowder could ignite...if you fired the opposite direction of travel, bullet could travel in anydirection, although fps would be low...

I fire guns, work on them...own many...at 14 i carry them with me in my car... .22 fully automatic long rifle...129 round clip for that sucker... 20 gauge and 12 gauge shotguns...1st being a breechloader...2nd being semi-auto... many more working and non-working collectables...don't fire them though...old and fragile, more reason being in their value than previous 2...but where did you find a gun with 3000fps?!?!?!

2006-06-15 12:45:34 · answer #7 · answered by Anonymous · 0 0

yes, because the bullet in the gun is already moving at 3000 fps and if you fire the gun, the bullet will be moving at 6000 fps

2006-06-15 12:41:07 · answer #8 · answered by Anonymous · 0 0

The bullet would leave the gun at 3000 ft/sec from your stand point and 6000 ft/sec from a stationary observer's stand point. Its all relative.

2006-06-15 12:42:55 · answer #9 · answered by williegod 6 · 0 0

Nobody asked what direction the gun was being fired? If fired to the rear the projectile would fall straight down.

2014-12-29 22:18:51 · answer #10 · answered by Anthony 1 · 0 0

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