insane_alien Posted May 1, 2007 Share Posted May 1, 2007 the lid would have been vapourised in the first few milliseconds. assuming it remained whole. if it didn't then you would be talking microseconds before complete vapourisation. 11,200 ms^-1 is extremely fast(escape velocity) and the lid was probably travelling a bit faster. Link to comment Share on other sites More sharing options...
Klaynos Posted May 1, 2007 Share Posted May 1, 2007 You must also remember that escape velocity, ignores friction, and that once you get to infinity your velocity is 0... (of if you are just working out a height velocity, not infinity then your velocity at that height is 0). Link to comment Share on other sites More sharing options...
grifter Posted May 1, 2007 Share Posted May 1, 2007 Yep... One tip though, the [sup ][/sup ] and [sub ][/sub ] tags without spaces are quite usefully lol that would help allot, thanks I'm trying to learn LaTeX at the moment, not going to badly Link to comment Share on other sites More sharing options...
Rocket Man Posted May 2, 2007 Share Posted May 2, 2007 if you actuallly integrate x^-2 starting from 1, the ingegral will never exceed 1. so if you have velocity 1.5, and you start from 1, as you approach infinity, your velocity approaches 0.5. it sort of makes sense, it means that there's a finite amount of potential energy no matter what the distances are. (allowing an infinite universe with finite contents?) the lid was supposedly about a metre thick of steel so there wasn't a chance in hell that it actually got anywhere but the math behind it pointed to escape velocity. Link to comment Share on other sites More sharing options...
YT2095 Posted May 2, 2007 Share Posted May 2, 2007 What were they thinking!??? we can bust a metre thick with Conventional weapons, but a Nuke! erm... it`s a No-Brainer LOL Link to comment Share on other sites More sharing options...
insane_alien Posted May 2, 2007 Share Posted May 2, 2007 a 1 meter thick steel plate would have easily been lifted by the pressure wave. it would just vapourise it before it got very far off the ground. then you would have a nice plasma cloud. Link to comment Share on other sites More sharing options...
Genecks Posted May 3, 2007 Share Posted May 3, 2007 Well, the easiest way is to blow up earth. It probably doesn't take 6.5 billion dollars to do that... maybe 6+ billion people... Afterwards, just use the earth to thrust whatever object you need thrusted. Link to comment Share on other sites More sharing options...
alan2here Posted June 2, 2007 Share Posted June 2, 2007 Somone once told me about how you could fly and plane verry high then light the rocket to boost the plane the extra distance. To the people on the first page of this thread: Please try not to troll. We all started somewhere. Link to comment Share on other sites More sharing options...
aviv8 Posted June 22, 2007 Author Share Posted June 22, 2007 i want to send somthing to space. for this i need guide how to build rocket engine and someone that donate money for this project. Link to comment Share on other sites More sharing options...
richard Posted June 22, 2007 Share Posted June 22, 2007 Escape velocity is for an unpowered projectile to go up and stay up. You therefore have to reach orbital velocity also. Link to comment Share on other sites More sharing options...
foodchain Posted June 22, 2007 Share Posted June 22, 2007 Most all modern or used means are simply chemical rockets, well its not simple but that’s what’s used. You have to have enough to reach escape velocity for the object in relation to how long it will take to basically reach a point that it could be in space or at a point in which it could take on an orbit, which I am sure is a unholy amount of math all together on its own, which then means you need something to do that, like a computer for instance, and in reality I would not mess with it as it took lots of people a lot of time to do this and a slip with the fuel probably would annihilate a large section of the earth you happen to be in, not to mention if you miss something in the math and the rocket decides to travel in a different direction or something. Link to comment Share on other sites More sharing options...
Phi for All Posted June 22, 2007 Share Posted June 22, 2007 i want to send somthing to space.for this i need guide how to build rocket engine and someone that donate money for this project. This just became a spam solicitation. Come back when you have the funding. Thread closed. Link to comment Share on other sites More sharing options...
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