Everyone in the world jumped.....and hit the floor at the same time what would happen?

Question

anything?

Answer 1

Bequalming's answer is exactly right.

In order for "something to happen," the people would have to jump so high that they escaped the earth. Then that 0.00000...cm change would remain permanent.

In fact, if you could just throw a golf ball into space, there would be a difference, but it would be sooooo small that it would be impossible to measure.

Jupiter's orbit changes every time NASA flys one of their probes by it for a gravity boost. (That change is even smaller than it would be on the Earth)

So no, if the people landed back on the Earth, the act of jumping, and the act of gravity pulling the jumpers and the Earth back together would cancel each other out, leaving no change.

Answer 2

I think if everyone (billions of people) in the world jumped at the same time.. at least a few hundred people would land wrong and end up breaking their ankles.

I think some of those people (who jumped) would end up landing on something sharp and puncturing their foot, drawing blood in some, but not all of them.. some would merely say owww.. dammit

Some people would undoubtably enjoy it so much the first time that they would choose to jump a second time. Fewer still, especially kids would jump three or more times just for the heck of it.

A relatively small number would be holding some sort of drink or food when they jumped...and would spill it on themselves and/or others.

Some people would flat out refuse to jump for fear of what might happen.. or just to say that they didn't jump

So sure... a great deal would happen

Answer 3

Some buildings built in a flimsy way might collapse, because of the people inside of them jumping. Nothing would happen to the planet, if that's what you are wondering.

Compared to the size of Earth's crust and mantle, humans are less than negligible. We do not have enough mass between us to have any real impact on anything but our direct surroundings (if you were thinking orbits or planetary spin would change, or anything like that.)

Answer 4

We would set a Guiness Book of World Records for the most people jumping at the same time!

Answer 5

there are more people on the northern hemisphere than the southern hemisphere. When the people jump, they "push against the earth" and perhaps move it 0.000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001 cm
When they land, the earth would push back by the same amount, resulting in a net change of zero.

Answer 6

They performed that trick on us in college on April Fools day. They stated to help international Warming, all of us contained in the international become going to leap jointly so the earth might want to flow somewhat.

Answer 7

An increase in the instances of nerve damage to the feet and legs. Unless, of course, you land on your head.

Answer 8

If there were enough people on the planet to weigh more than everything else, then yeah, something would probably happen... a few countries would sink or something, but not much else

Answer 9

We would probably have an earthquake.Here's one for you.What would happen if the whole world farted at once?

Answer 10

It seems like you cause an erosion, you know, like an earthquake would.