What would happen if you jumped into a hole that goes all the way through the world?
150657
gravity is highest at the centre of the earth. so you will be accelerating towards the centre.since there is no resistence (assume so that there is no air), you would not stop at the centre due to inertia of motion and continue to go beyond the centre to teh other side. but due to increasing pull on you, you will turn back and continue to oscillate about the center of the earth.\n\nits good for theory but humanly imposible
743209
I would say that the most impossible part is when they enter the giant geode. If they were heading towards the center of the earth than when they entered the geode they would enter at the top and fall probably for hundreds of miles and die on impact. Also Giant Geode though a cool thought yeah right.
315970
Dig a big hole under the U.S. and watch it fall into the ocean. Problem solved.
1043854
This is a cool question.  If you were able to tunnel through the Earth, and fall through, your speed would keep increasing until you reached the graviational center.  At that point, the net gravitational force is zero, because all of the forces cancel.  However, you wouldn't just stop because of your inertia.  You would go right through, but then you would begin to slow down, until you reached the other hole.  Depending on how high you started from the first hole, and lets say you jumped five feet above the hole, you would come to a complete stop five feet above the second hole.  Then you would fall back through and continue that cycle.  (Of course we aren't considering air resistance, which screws everything up! ;0)\n\nGuess how long it would take to make it to the other side of the Earth through that tunnel?  Approximately 42 minutes!  Not a bad way of traveling.\n\nThe other cool thing is, if you were to tunnel from say New York to Berlin, which means the tunnel isn't obviously through the middle of the Earth, it would still take you 42 minutes!
316751
NO. but if you would try it, you may get a Hole in one...
662670
We actually figured this out in highschool physics class.  If even one person jumped, it changes the earth's orbit, but it is only a tiny little bit.  If everyone jumped in one area at the same time, it would move such a small fraction of an inch that it wouldn't even be observed.
562147
That presumes the earth is a perfect sphere, and that you are drilling directly toward the center of the earth.  In reality, the earth is slightly fatter in the middle than at the poles, plus there's little or no chance of drilling directly toward the center of the earth, much less making it out to the other side.  Man-made drill holes have never even pentrated the earth's crust, which goes 10-40 miles deep in most places.  For comparison, the diameter of the earth is about 8000 miles, between 200 and 800 times the depth of the crust.\n\nTo drill such a hole would be an engineering impossibility, for a host of reasons, notably the heat contained in the earth's mantle and core, but also simple issues of scale.  The longest man-made tunnels, such as the "Chunnel", which spans the English Channel between France and England, and the Sei-kan, which spans the strait between the Japanese mainland (Honshu) and the island of Hokkaido, stretch less than 35 miles and cost hundreds of millions of dollars per mile.  At that rate of cost, a tunnel through the earth would cost on the order of 2 trillion dollars.  And that's not even taking into account for the cost of keeping the tunnel cool enough to operate within it, and building a structure capable of withstanding the flow of magma, so as to prevent the tunnel from collapsing behind you as you tunnel.\n\nIn short, I wouldn't go so far as to call it impossible...just so infeasible as to ensure that it will never, ever happen.
378723
The closer you get to a black hole, the greater the gravity gradient gets.  That is, the force of gravity is much stronger near the black hole than far away.\n\nAs you fell into the BH, the difference between the force of gravity at your feet and your head would become so great that your body would be ripped in two.  Then as the two pieces of you fell closer to the hole, the gravity gradient would increase still more, and the two pieces would be ripped into four.  This would continue until, by the time you reached the event horizon, you would be ripped into countless tiny pieces.  \n\nThe little pieces of you would fall through the event horizon, then continue falling and ripping into smaller pieces until they reached the singularity at the center of the BH.  No one knows what would happen then, because a sinuglarity does not obey the laws of physics that we know; gravity and density are infinite there.
125575
Good question - there are so many places a black hole can take you. For one, to your death. A black hole is a "gravitic" (is there such a word even?) pull in space that attracts everything including light. It is said that the force from within the black hole is so strong, that if a person were to enter a black hole - they would be ripped apart or quashed to death. Something like that. I'm not really sure, coz' I've never been into a black hole... =p\n\nThe other idea is, a black hole is actually sort of a teleporter or waypoint from one part of the universe to the other. It's like walking through a door only to find yourself on the other side of the world. If that's true, then the black holes are just shortcuts for us to access any part of the universe in a split second. Unfortunately, no one dares or wants to gamble their life by jumping into a black hole (which also by the way, the nearest could be a couple of light years away). Besides, if you entered a black hole and found a cooler planet on the other side - would you want to come back? I think not.\n\nSo it boils down to this - do you think that you can jump through a black hole to appear on the other side of the universe? Find a new world? Or do you think you'll be torn to pieces? The choice is yours. For now, there isn't a definite answer. But think the Bermuda Triangle and you've got your answer... =p
425563
Everyone would have everything they need or have ever dreamed of. \n\nOr the world would come to an end by the mere force of the bag being turned inside out, upsetting the parellel universe where all of the items of the bag come from.
1110006
if you DIDN'T include the SCORCHING MAGMA and the EXTREME VELOCITIES EXHIBITED BY FALLING THROUGH THE EARTH and also the CHANCE THERE IS WATER ON THE OTHER SIDE THAT WOULD EMPTY INTO THE HOLE, you would go down easy, but then it would become increasingly hard to climb out of the hole once you are at the center. also, gravity will be stronger at the middle and close to it. here is a diagram. gravitational force is measured as 1 weakest and 4 second strongest, then () as the center. [ and ] are the crust\nweeeeeeeeeeeeeee    center of earth!!!!  \n[ 1       2        3           4             ()                 4        3        2        1 ]\n\nbasically, closer to the center of the earth, greater gravitational force. you could get crushed by the gravity in the center anyway and there would be not enough oxygen to breathe for the extension of the trip. revisiting the make a hole to china and maybe end up in a ocean idea, here is a link.\n\nhttp://www.digholes.com/\n\nthis is kind of cool. double click where you are digging from, then it will show where on earth you would end up. if you dug from china straight down, you would end up in south america. try it.
1051553
By never-ending it implies that there is no bottom, so you would simply continue to fall for all eternity.  No bottom, no splat, therefore no place to end up.
351909
You would rip a hole in the time space continuum...  \nIf you hit an egg with a  rod it explodes and you have to clean up...
90857
It depends on where you dig the hole !\nIf you dig it on the north Pole (or south Pole) you would accelerate until wind drag compensates for gravitational forces (around 200 km per hour, approximately 120 miles per hour)\nThe gravitational forces become weaker the more you enter the center of the earth (and vanish at the center) so your speed will decrease to a minimum(some speed might remain, because wind drag increased with speed).\n\nI think that you would get stuck near the center of the earth.\n\nIf you dig a hole on the equater, you will probably notice after an hour or so that the wall of the hole seems to get closer to you.\nThe reason is the rotation of the earth: on the equator, you have a speed of some 40,000 km per day (24,000 miles per day - 1000 miles per hour).\nAt lower heights, the earth will still turn in 24 hours - but the circle is smaller, whence the speed.\nAs a consequence, you are likely to scrape against the wall.\n(and remain stuck in the center of the earth as well).
1078859
If he falls freely with no rubbing against the walls of the hole he'll gradually speed up until he reaches the center of the earth, then he'll coast on past the center, gradually slowing down until he rises just to the surface of the earth on the other side where he'll come to a stop momentarily.  Then he'll fall back down into the hole and repeat the motion in reverse.  (It will be simple harmonic motion as one of the other responders said.) This will happen over and over.  He won't stop at the center of the earth.  I believe a round trip will take about 90 minutes.
650198
if you fall into a black hole chances are you'd desintegrate!!!
1101320
What if we could bump into the end of the universe, what would be on the other side of that wall?  An infinite wall?