What your asking is "escape velocity"; the answer is 17500 miles per hour; this will sustain an object in free orbit.
cool, eh?
Speed is relevant to how much time you want to get to other locations as well as how fast those objects are moving and what direction they are moving.
Mars has a window for launching a few times a year. If you miss the window it is moving "away" and navigation in nasty, a big risk.
As we are in the soloar system as you say, you need only launch at 17500 mph to escape Earths gravitational pull; after that most probes accelerate to around 30,000 miles per hour, or more to probe larger planets at a distance; the trips take years.
To reach any other Galaxy with current technology is whacked.
Currently the Andromeda Galaxy is heading right for ours, the Milky Way Galaxy. It is estimated a collision will occure in 3 billion years.
The Andromeda is 2 million light years away. Or, it would take a ship travelling 186,000 miles PER SECOND to reach Andromeda in 2 million years.
But.....this is soooooooooooooooooo cool, the people on the ship will not experience a 2 million year lag time as they will percieve it as, maybe, 250,000 years.
Which means they are toast anyway...this is Einsteins relativity issue E= mc2.
2007-09-21 08:59:57
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answer #1
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answered by Adonai 5
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Speed has nothing to do with it. The question is how how much force is required to exit earths gravity? A bullet moves faster than a rocket, yet there is no way for a bullet to escape the earth. I don't know the answer to the amount.
Speed is a measure of distance/time (mph), once an object is free of the gravitational pull of earth it requires very little force for the object to travel in space. Take for example all the probes NASA sends into space. They don't move very fast, but imagine the calculations involved for the probes to drift in space and get close enough to a plant years after launch to take those picture we've seen.
Remembers Newtons 1st law: Every object in a state of uniform motion tends to remain in that state of motion unless an external force is applied to it.
For a launch a large external force is gravity.
2007-09-21 09:17:08
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answer #2
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answered by bostep662 4
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Speed To Get Into Orbit
2017-01-14 14:53:48
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answer #3
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answered by ? 3
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To acheive orbit, you need to go about 18000 miles an hour. To get off the Earth and into the solar system, it is a little bit less.
To get to other galaxies would take hundereds of thousands of years even at the fastest we can make something go right now. But if time is no concern, you could go very slow. You just need enough speed to break away from the gravitational pull of our star and then our galaxy, which depends upon your distance from the Sun or middle of our galaxy.
2007-09-21 09:04:31
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answer #4
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answered by Mr. Scientist 4
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weapons don't have adequate speed to reason a bullet to flow into orbit in spite of if fired from the exterior of the Moon. The minimum distance for a lunar orbit is the area at which you collide with the Moon. besides the undeniable fact that, large mass concentrations interior the Moon (probably brought about by employing historical impacts) render orbits risky. After some months, the orbits improve so eccentric that they intersect the exterior, and the object crashes.
2016-10-09 14:49:59
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answer #5
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answered by ? 4
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Actually the correct substance of force and speed to get a bullet to the Solar system is at least 429,190mph and its simpe it just needs to get out of our atmosphere and its already in the solar system. but also it would need more force and speed to launch another heavier object.
And to get into another Galaxy would be the same 429,190mph because in space there is no gravity and no back thrust to slow whatever you launch into space so it will keep going until it lands onto another planet. but still it needs more speed to take another heavier object just to get out the atmosphere.
2007-09-21 09:15:15
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answer #6
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answered by cok.anut 1
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For Low Earth orbit, you need to boost it to about 17,500 miles/hour. This is about the speed of the shuttle & space station, and any satellites that orbit about 150 to 400 miles up.
While it takes more energy to get there, satellites that are in Geo-synchronous orbits (at 23,600 miles), move slower than satellites in Low Earth orbit. (about 6,200 miles per hour.)
To escape Earth orbit, you'd need about 25,000 miles per hour, and this will get you into the solar system, but not out of the gravity of the sun.
To exit the solar system, you need to be moving about 37,500 miles per hour (and faster is better.)
2007-09-21 09:02:51
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answer #7
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answered by quantumclaustrophobe 7
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the space shuttle launches from 0 - 175000 (orbit velocity) in about 8.5 minutes. the station requires the same velocity to remain in orbit... with a few reboosts now and then.
2007-09-21 11:31:16
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answer #8
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answered by mcdonaldcj 6
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I believe escape velocity to get beyond earths gravitational pull is 7 miles per second
2007-09-21 09:00:36
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answer #9
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answered by Anonymous
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Its weight to gravity ratio, and force required to propel the object. The less weight the less force. In space, its all about propulsion.
2007-09-21 09:02:07
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answer #10
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answered by Anonymous
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