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Hi guys, I know there are a lot of pretty smart people here, so I have a question that I can`t figure out for myself:
If a plane traveling at 2000km/h fires a missile that can go up to 3000km/h, at what speed the missile will be traveling from the point of view of a person on earth and also from the point of view of the pilot? Lets assume that the missile reaches 3000km/h instantaneously after it is fired. Thanks!
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Not an aerospace guy but I'd assume that speed is relative to the atmosphere. Assuming that the wind speed in the area is relatively small, a stationary observer on the surface of the earth would see it moving at 3000 km/h and the pilot would see it moving at 1000 km/h (so long as neither the plane or missile turn after firing in the direction of the motion of the plane).
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Let's take a less confusing example Imagine you're riding a bike with 10 km/h, throwing a water bottle while riding. Of course the velocities will add up.
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The missile will be traveling backward in time relative to the plane and the observer on Earth. This is because instantaneous mathematics is not identity-preserving. The missile cannot remain the missile in an instantaneous mathematics that simultaneously preserves the identity of the missile, the plane, and the observer on Earth.
This is because our notion of identity for these objects is predicated on the speed of information maintaining their separate identities. The rate of information transaction is bounded by the speed of light. Therefore our definition of infinity is continuous with the speed of information transfer only when it is bounded by the speed of light. Knowing what we know about infinitesimal calculus continuity is only preserved when an infinitesimal is not wrongly defined.
It is for reasons like these SSJ3 Goku is unable to maintain his SSJ3 status for so long in the mortal realm. It would seem SSJ3 expresses boundaries that can only be circumvented when a Saiyan is dead. It is possible Goku would never have obtained SSJ3 status in the mortal realm.
Dragonball Super seems to be a very good sign in this regard because it suggests other methods of transcending. Hopefully a new color of SSGSS will be possible as the Saiyans travel across other universes.
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Teamliquid is not here to do your homework.
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"Top speed" is a function not a value.
If we assume the missile's top speed is where the forces of air friction and it's propulsion cancel out, then the missile will go at 3000kph from the ground 1000kph from the plane
if we treat the missile more like a bullet where it's propulsion is instantaneous and creates a delta-v of 3000kph, then it would of course achieve 5000kph from the ground and 3000kph from the plane.
The problem is that ALL velocity is in relationship to something and your question fails to define the frames of reference required to answer it in a meaningful manner.
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On April 13 2017 03:37 Sn0_Man wrote: "Top speed" is a function not a value.
If we assume the missile's top speed is where the forces of air friction and it's propulsion cancel out, then the missile will go at 3000kph from the ground 1000kph from the plane
if we treat the missile more like a bullet where it's propulsion is instantaneous and creates a delta-v of 3000kph, then it would of course achieve 5000kph from the ground and 3000kph from the plane.
The problem is that ALL velocity is in relationship to something and your question fails to define the frames of reference required to answer it in a meaningful manner.
Thanks, now it makes sense to me.
On April 13 2017 03:27 ninazerg wrote: Teamliquid is not here to do your homework.
I registered here 4 years after I graduated.
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Ninazerg this doesn't really seem like a homework problem lol.
Something to do with a missile being fired from a plane.
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Call me racist, but I wouldn't be surprised if that was a US math problem in high school. Same goes for the not understanding part.
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On April 13 2017 05:50 GeckoXp wrote: Call me racist, but I wouldn't be surprised if that was a US math problem in high school. Same goes for the not understanding part. Maybe a physics problem, that and chemistry are the only high school courses that used metric in my experience.
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On April 13 2017 05:50 GeckoXp wrote: Call me racist, but I wouldn't be surprised if that was a US math problem in high school. Same goes for the not understanding part. Why would you shame people for asking questions? Also, OP is from Bulgaria, not USA...
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Assuming the missile and the plane are traveling along the same vector, the pilot would see the missile flying away from the plane at 1000km/h. The speed of the missile from the POV of a ground observer would depend on the height of the plane above the ground.
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On April 13 2017 06:33 DaHui2 wrote: Assuming the missile and the plane are traveling along the same vector, the pilot would see the missile flying away from the plane at 1000km/h. The speed of the missile from the POV of a ground observer would depend on the height of the plane above the ground. Why do the velocities not simply add up, in your opinion?
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United States24333 Posts
Please don't make short homework help threads.
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