What would happen if the world was flat?
150621
And if the flat earth was massive enough to generate significant gravity it would quickly crumble from it´s own mass to form a sphere.
313191
If this happened I think the world would end because the vibrations would cause all volcano's to erupt, plates to shift causing massive earthquakes.  Then, all the volcanic dust would block out the sun causing the earth to freeze and sending us into another ice age. In desperation idiots in third world countries would launch nuclear weapons trying to heat things up but, this would kill all forms of life except of course cockroaches!
523001
It would change the Earth's rotation and the Earth would tilt on its axis. What if all of us asked the same question at the same time that violated one of  Yahoo's community guidelines? Would the system completely break down?
360950
Let me ask you, what would it be like of you were at the end of the Earth? Would it be like a cliff that you could jump off? That is silly because the Earth is round. It has a finite surface area but no edge. The edge is the surface you are standing on. Every place on Earth is the edge. It is believed that in a similar way the 3D universe is curved in the 4th dimension, so that it has a finite volume but no edge. Or you could say you are at the edge all the time but don't know it since you cannot perceive the 4th dimension.
1185652
you know the world isnt flat right??
71743
nothing at all!\nYou'll have to leave evrerything,bank account,cars,buildings....\nIsn't it time to think of an eternal world?
496211
The leavings would have no mass, no length, no width, no depth, no measurements of any kind and there would be no beings in existence, sentient or otherwise,  to perceive this lack of existence so nothing would be here not even here would be here. It would be nowhere.
206676
The world would come together in panic ... "Where the &*^^ did the US go?"  Conspiracy theorys would abound.  Tensions would be high - no one would trust anyone else.  Did an experiment go wrong?  Did one country develope an incredible weapon?  Are the aliens finally attacking?  Did God decide simply to wipe them off the face of the earth?  Different groups would claim responsibility -- most of them groups no one has ever heard of.  And all over this great world, there would be office pools involving which country would disappear next.  (My money would be on Akrotiri - but really, if they disappeared, who'd notice?)
727320
If you were truly flying straight, you would eventually fly into outer space. Planes do follow the curvature of the earth--usually by maintaining a certain altitude.
720326
Assuming the population of the earth is 6 billion, and the average person weighs 70kg, that equates to 420 million tonnes (if I've done my maths correctly). If everyone stood on one side and jumped simultaneously, then nothing will happen as no weight would be lost from the earth.\n\nIf everyone had such springy powerful feet that they were able to jump to escape velocity (25000 mph) which means they won't come back down again, then that would cause a displacement in weight which would affect the earth.
1017741
Lots of things would change but I think these would be most interesting/impactful:\n\n- The sun would rise in the west and set in the east. As someone else noted, time zones would reverse. TV shows would now be at 8 Pacific, 5 Eastern...\n\n- You'd lose all satellite TV and communications, since these satellites are in geosynchronous orbit now and would no longer stay over the right spot on the earth\n\n- Not sure if GPS would actually still work or not. I don't think the system cares which satellite it finds, so you might be switching between them much more often but I think the system itself would still calculate position correctly.\n\n- Weather patterns would shift; hurricanes and tornados would now rotate clockwise in the northern hemisphere. There would probably be some pretty drastic climate changes.\n\n- Software for guidance cruise missiles, rockets, anything that uses gyros & calculations instead of GPS for navigation would be way off and would need to be reprogrammed\n\n- It's not a given it would happen immediately, but in short order the magnetic field of earth would also flip, so all compasses would read backwards. (This has happened several times in earth's history and will probably happen again - doesn't depend on rotation reversing, but would probably be triggered by it.)\n\n- Contrary to popular belief, direction that water flushes down the toilet or circles down the drain would NOT change...
425722
The world is not flat! yu must serously not get out much! its just flat in books unless its a pop up book!
368466
it would disappear... (as per the the current physiscs theory we have..)  it would go to the future :)
221462
Actually, No.\n\nIf our planet was anything but symetric about the access of rotation, it would develop a tremendous vibration or wobble.  This would lead either to localized forces that would eject people and things beyond the gravitational field, or would result in the complete breakup of the planet itself.\n\nSorry.
575180
my interpretation is that the existance of humanity will be long enuf to see the montains move. think of it this way, if you were omnipotent and watched thre earth through time you would see the lands shift and mountains melt away with erosion.
235214
You answered it , blackness .No universe, no planets .that would be nothingness  ! Not anything !
19690
who would win?  nobody.  nobody would win.  there would be millions dead on both sides, and everybody in the entire world would lose.