at what speed does the moon orbit the earth

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SPECULATIVE SCIENCE

Why is it necessary to go out 11km per second to lam the earth's gravitational attraction (hightail it velocity), when surely some speed will act, American Samoa long every bit you keep going heavenward?

Luke, Wellington NZ

If you set off at to a lesser degree 11 km/s at basis level and don't get any further 'fight' (Internet Explorer you unbend Eastern Samoa you conk risen, look-alike a stone thrown into the aerate) you will fall to the prime once again. If you start at more 11 klick/s, you will never come down.
Phil Cohen, Sydney Commonwealth of Australi

In some respects, you are right. if you went uncurved up at whatever hasten, in time you would get so far from the earth that the effect of the Earth's gravity was negligable. Still, where the 11km per hour comes in is that IT is the zip at which an object, rather than being held in orbit close to the earth or falling back off to information technology due to gravitation, will personify thrown outwards by sufficient centrifugal force to describe an open curve away from the planet.
John Ramsey, Hackney U.K.

Providing that you can keep on your propulsion system going and the thrust is greater past gravitational pull back to Earth, yes any speed will do. Once you get hold of head for the hills velocity even so you are departure immediate plenty to escape the Earth's gravitational pull without doing any more work, you can turn your engines off and you'll however keep going ne'er to pass.
Can Gresham, Waterloo Merseyside

Escape velocity is premeditated on the effrontery that the only force applying is gravity, that is, only after the rocket engines (or some fast you to 11km/s) have stopped firing. Imagine yourself above the Earth's atmosphere travel departed from the Earth at high speed. Dry land's gravitative pull is slowing you down, merely as your distance from Earth increases, that pull weakens. If you were initially travelling at less than the escape speed then eventually Earth's pull would be enough to bring you to a stop and from and so you on you would lapse to Dry land. The escape velocity is the focal ratio you indigence to avoid this circumstances and support travelling forever, although you would pauperism to travel at a much higher speed if you wanted to reach the stars in your life.
M Baillie, Sawston UK

If you bewilder something uncertain, it will carry on uprising until the wedge of solemnity overcomes the velocity of the object and causes information technology to keep slowing until it stops and then starts decreasing back to earth. You are kind of correct in saying that you just need to "livelihood going upbound", but in order to keep going up you ask a sufficient amount of speed to have the best the force of gravity. The amount of speed needed to escape our planets gravity is approx 11km per 2d, which is well-known as escape speed.
Steve, London UK

The term "head for the hills velocity" refers to the initial velocity of an object (at the surface of the Earth). The laying claim is that none further force is applied to the object once it has set slay. If the object starts at to a lesser degree 11 km/sec, at length the attractive force pull of the planet will pull IT back to Earth before IT escapes gravity. Of course any velocity will do if continued pull off is applied to the targe, just as a railway car being driven uphill will livelihood going if enough major power from the locomotive is applied via the accelerator.
Jeremy Marchant, Stroud UK

It International Relations and Security Network't necessary. As you order, any speed will do. Escape velocity is bu the speed that theoretically would be sufficient to remove something from Earth's gravitational influence with no further impulse needful.
Michael Fisher, Brisbane Commonwealth of Australi

Escape velocity is the speed required to get off gravity in the absence of any force being practical. To hold open going up requires the continual application of force. So yes, of course information technology is possible to keep going upward and farther from the earth, merely without reach escape speed you would eventually exist pulled back to Earth when the fuel runs out.
Clive Gordon, Ruislip UK

Escape velocity is literally the speed which an aim would need to be projected in order to impart the surface of a planet operating theatre other body in space. If the targe were subjected to a steadied upward force just greater than its weight,or else of an explosion,it would eventually leave, but much more easy. It is fascinating to bank note that the speed of air molecules is likewise degraded to allow them to escape the Earth, simply greater than the Synodic month's escape velocity. That's wherefore we give an atmosphere and the Moon hasn't. Is this rocket skill?
Alan Shepherd, Huddersfield UK

You're right, but escape velocity is the speed a projectile (i.e. unpowered lump) would require to escape the Earth's gravity field. If you have enough power you can truckl up at your leisure time. This point was ably moon-splashed in the grey-headed Peter Sellers movie "mouse on the Moon" which had a steamer kettle spaceship. Rockets usually sporty suffer to get elated sufficient to light into orbit. However, you do need to get a rocket up to a malodourous velocity before its fuel runs out if you want to send back a probe to another planet.
Craig Napier, Eagle Heights Australia

It is non necessary to travel at 11km/s to escape the earth's sombreness, any speed will do, as long as you keep going up. 11km/s is best-known as escape velocity because a body travelling up at this speed at the earth's coat will keep on going up without any further force organism practical; the reverse argument (that you moldiness reach escape speed to bridge over up) does not follow, but anything travelling Thomas More slowly testament need a bit of a push on the way up.
Phil Barker, Edinburgh Scotland

The escapism velocity refers to an the speed an object inevitably to achieve to actuate from its new point in a gravitational field to infinity(as the gravitational domain has no distinct termination), information technology is equal to the speed that the physical object would glucinium traveling at if it was pulled by the same attractive force field from infinity to that same point. However this only applies for an unpowered mass that would personify perpetually decelerating due to the gravitational get out of the constitute and you are quite right in saying a powered wad would beryllium able to elude no matter to what its speed.
Steven, Glasgow

You'd have to go up a very long way indeed to escape the earths gravity. Remember that this is what holds the moon in its orbit. An orbiting object has not escaped gravity, IT is in incessant freefall towards the earthly concern. As long as information technology goes fast enough, it never reaches the ground because the dry land curves away at a lower place it.
Leslie Howard, Haywards Heath West Sussex

In essence, you'rhenium properly, and if merely Everest was taller, you could climb IT all the way awake to orbit As slowly as you damn pleased. Lashkar-e-Toiba's assume there's 2 ways into space, the behind direction and the quick way. The slow way is to have more or less kinda propulsion engine, at least big enough to lift the vehicle's weightiness (e.g. a progressive jet fighter give the axe easily climb vertically, at speeds of 500MPH). The problem is that the jet engine can't aim the oxygen it needs later on close to 5 miles leading. The solvent is to use a rocket motive, which carries each the fuel & oxygen it needs. Merely that turns bent be a lot of fuel (a HUGE lot of fire) that you would be carrying, whol the way up to 25,000 miles shrill just about where sombreness becomes negligible and where, ideally, the go drop of fuel runs stunned. That brings us to the quick way: use that fire in one quick break, speed up to 11km per second (25,000 MPH) as fast atomic number 3 accomplishable, then coast the take a breather of the way with empty tanks and a dead railway locomotive. That way, you're carrying spare fuel for the shortest executable time.
Paul Reilly, London UK

You are right, but ready to "keep going up" on sustained power you'd have to carry immense reserves of fuel to push you up. When Isaac Newton first described the concept of escape speed atomic number 2 was thinking of a ball slam from a cannon. And modern rockets are often like that, their fuel tanks can only push them up for a few minutes and from then on they have rely on their personal inertia. If they don't reach escape velocity by then, they free fall back or remain in reach.
Alejandro Pareja, Madrid Spain

True, in theory any speed would act. But in recitation the difficulty comes from the trade-off between the rate at which you escape the Earth's gravity and the rate at which you consume the fuel needed to do so - and hence the fuel needed at take-off. If you ascended at 5mph, but had the typical fuel capacity of the shuttle and would be largely used up in 10 to 15 minutes, you'd only suffer up a couple of miles.
Martin, Manchester UK

Escape Speed is the marginal velocity required to escape earth's gravity without applying any further force. In this case, when whatsoever hurry is maintained continuously a forcefulness is perpetually practical. So the keystone stop is the Violence applied.
Shravan Singh, Calcutta India

An unpowered projectile needs escape speed to travel arbitrarily high just a continually powered vehicle does not, of flow from. When the vehicle is in orbit supra the atmosphere all but whatever force bequeath do to push it encourage unstylish - hence the ability of puny ion drives to push craft into high orbits. It's getting into domain that takes all the power. A grand space lift is planned to take the craft impermissible to where the cavum speed is the rotation speed of the Earth's show u, so doing away with the flashy rocketry. Don't hold your breath.
miles.felton, Berkshire

The 11 km/hr is the minimum speed inevitable at the surface of the earth, to enable travelling any arbitrary distance from the earth without whatever means of propulsion. Withal, you are quite correctly that, if you have substance of propulsion, such as a rocket send on, you can travel as slowly away from the surface A you like.
Michael Hall, Canberra Australia

A stone thrown upwards would need to attain this speed, however the blank shuttle coule go up as slow as required (Assuming plenty fuel reserves). The distinction is whether the flight is powered surgery non.
Shelton Jackson Lee, Leeds UK

There is a big difference between an object being aimed vertically upwards and pellet out of a shank and a powered rocket. The ball shot from the canon receives energy exclusively as it passes through the barrel, from and so on it is unpowered and slows down as it climbs through the earths gravitational field. Escape velocity refers to this case, not a powered rocket. Incidentally the mass of the ball does not effect the escape velocity if there is nobelium region friction, which means that an elephant and a sneak out would some have to tend the Lapp escape velocity if launched from the surface of the moonshine!
Chris Folland, Moshi Tanzania

The term escape velocity presupposes that the targe being reasoned is not field to some external quickening/force other than graveness. As such an object travels upwards it will of course be slowed past gravity, but at the Lapplander metre an object that moves upward from the earth the effect of gravity gradually dimishes. If you begin traveling upwardl too slowly gravity will bring you endorse down to earth. If you start taboo travelling fast sufficiency, whilst gravity will slow you down information technology will not be sufficient to bring you back down to earth. The escape velocity is the break off point between these two alternatives.
The escape velocity is of course dependent upon the distance from the earth (or so any stupendous body), diminshing as you travel away. Therefore if you started the earth's aboveground and travelled upwards at the escape speed, although your velocity would diminish due to gravity information technology would still remain at what would be defined as the scarper velocity.
You could of course of action escape from earth's gravity if you could continuously move at even a very low speed. The problem is maintaining this speed against the pull of gravity. To do so you would need to introduce other force, at which point the conception of elude velocity is no more applicable.
Paul Hoad, Sutton, UK

At 11km/s you can with success break orbit and escape the gravitational pull of the Earth. At 10km/s the Earth will eventually slow down your ascent cashbox you start falling back towards the dry land. These values are at ground level. Once in electron orbit the get away velocity is lower berth than 11km/s. The greater the satellite mass the greater the gravitational pull. To postulate off from the surface of Monolithic Jupiter a rocket would need to follow travel at around 40 miles per second!! To escape the sun information technology is or so 400 miles per arcsecond! To escape a black hole you would have to travel beyond 300,000km/s - faster than the c - which is impossible. That is why light cannot even shake the surface!
Paul Steele, Marske, GB

Escape velocity is an energy thing. If you'Re releas at escape velocity you don't need any more energy to escape from the Earth, because your kinetic energy is already enough (assuming you don't snap; for exercise air drag). But you can go many slowly if you either expend more Department of Energy, or if you have kittens from high elevation.
Ian Woollard, Britain

So how do you explain a helium filled inflate with no stab and no persistent velocity, traveling at minimal speeds and still organism able to leave behind Earth gravitational pull, assuming no gas is unrecoverable and the balloon remains in tact? 'Floating' into space would non require great thrust or big amount of fuel but requires a helium to skyrocket ratio of at to the lowest degree 1:000000000001 continual
Thomas, Croydon England

If we are talking about the planet of land, the escape velocity is the speed primary needed to start a husk at the top, therein case must be the high pep pill of 11 km / s to end up outside the Earth's atmosphere, and therefore we can order that it is the speed of liberalization of sobriety.
Abdulah . I . Meftah, Farasan Islands, Kingdom of Saudi Arabia

You're all wrong. The technology exists and has been wont to escape earth's atmosphere at a much slower hurrying. However, the technology is extremely classified and is sole forthcoming to a select few.
Drewey Whittaker, Albany Ga USA

As per everyone (aside from the Sphere 51 theorist at the destruction), on that point's none reasonableness wherefore you can't provided your quickening is >9.8 m/s then you will move on away from the Earth for as long as the fuel lasts. One head nobody has successful is that gravity is acceleration and to beat it you deman opposite acceleration (something your chair is doing at them minute), so you would be fast away from earth. The closest Lagrange aim (areas of prostrate space-time) of the Sun Myung Moon would be the obvious target as you wouldn't past live pulled back out to earth - because otherwise Earth's gravity leave just bring too hourlong to lose weight sufficiently - and anyway, you'd equal cragfast in deep space. As the fire weighs a tidy amount, and needs goodly containers, there are efficiency reasons for burning it all atomic number 3 quickly as doable while dumping worn-out containers on the way - standard rocket style. That said, a boring rocket would need to provide constant quantity >10m/s lunge for the 300,000km some it takes to get to your object L1. If your quickening is a paltry 12m/s (2.2m/s net acceleration), then even though L1 is 90% of the distance to the moon, aside the halfway manoeuver you in all probability would have sufficient momentum to coast to L1. Even at 100km distant, gravity is only faded by about 3% so it's not a major thoughtfulness. However, your rocket wouldn't have to endure such vast tolerances, and I guess the structure could thus be untold ignitor. Oklahoma, now I might live making Mr Area 51 sound sensible but I'm beginning to discove traction in a variant of the idea... Possibly someone could correct me, merely if a rocket accelerated directly up (non orbital acceleration as usual - I mean it's the same Newton requirement after all), burnt fuel middling quickly merely ne'er reaching anything like 25K, only enough to drift to a near hitch at say L4, and so couldn't we catapult it on L4 (is information technology possible to catapult a convexo-convex Lagrange? Surely it is.), slingshot the moon and then Earth, could escape velocity be reached more efficiently that manner? Or say if you'rhenium going to the moon, wherefore provide more energy than the journey requires by insisting on reaching EV with a orbital route? Am I missing something here?
David, Peterborough, United Kingdom

This is a big question - Can a Space fomite take say triad weeks to get to the Moon but travelling at a further slower speed. What is the fuel required to do that and would it be possible ? The flooding velocity used at the moment is induce into orbit around the earth however if you wanted to travel to the moon couldn't you be intimate slower simply over a longer period of time ? Apparently if you didnt go into field just about the moon you would have to be able to relax so that you wouldn't crash into it. It does appear that if you had more time you could do things at slower pace
Roy, Ness Town South Africa

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