What would happen if everyone jumped at the same time Xkcd?

What would happen if everyone jumped at the same time Xkcd?

What would happen if everyone on earth stood as close to each other as they could and jumped, everyone landing on the ground at the same instant? At the start of the scenario, the entire Earth’s population has been magically transported together into one place. This crowd takes up an area the size of Rhode Island.

What would happen if all the people on Earth jumped at once?

What if we all jumped at once? Because people are spread somewhat equally around the planet’s spherical surface , if we all jumped in place, nothing much would happen — all our lift-offs and impacts would cancel each other out, resulting in zero net force on the Earth, according to work by physicist Rhett Allain.

Why do we land on the same place when we jump?

We’re all on the moving Earth, and we’re travelling at the same speed as Earth. But as long as Earth is moving, we move around with it so that when we jump up, we’re actually moving up and around at the same time such that we come down in the same place.

What would Earth look like if it stopped spinning?

We know that the rotation of the Earth is gradually slowing down. Of course, if you suddenly stopped the Earth from spinning, most of our planet would rapidly become very inhospitable. Half of the planet would almost continuously face the heat of the Sun, while half would face the cold of space.

Why don’t we fly off the Earth if its spinning?

Normally, humans aren’t thrown off the moving Earth because gravity is holding us down. However, because we are rotating with the Earth, a ‘centrifugal force’ pushes us outwards from the centre of the planet. If this centrifugal force were bigger than the force of gravity, then we would be thrown into space.

Why don’t we fly off the Earth when we jump?

This means that when you jump, you don’t actually exert a force on the entire earth at once. Being elastic, the entire earth does not accelerate all at once away from you when you jump. Instead, you just deform a tiny bit of earth right under your feet.

What if Earth rotated faster?

The faster the Earth spins, the shorter our days would become. With a 1 mph speed increase, the day would only get about a minute and a half shorter and our internal body clocks, which stick to a pretty strict 24-hour schedule, probably wouldn’t notice.

What happens if everyone in China jumped at the same time?

What would happen if everyone in China jumped at the same time? They would move the earth slightly, on average. All the people in china weigh about 1 billion * 60kg -> 60 billion kg or 60 million tonnes. The earth weighs 6 x 10 24 kg so about 10 14 times more.

What are some facts about overpopulation in China?

China is one of the largest countries in the world by population and landmass, with over 1.4 billion citizens and 9.6 million kilometers of land. Overpopulation in China has resulted in the difficulty to sustain a quality of living that a majority of citizens would prefer.

How is the population of China going to change?

China’s demographic future— is declining fertility. For nearly two decades, the average number of children a couple is expected to produce has been less than 2, recently falling as low as approximately 1.5. Such a number is below the replacement level (the level required for a population to maintain its size in the long run).

How much do all the people in China weigh?

All the people in china weigh about 1 billion * 60kg -> 60 billion kg or 60 million tonnes. The earth weighs 6 x 10 24 kg so about 10 14 times more.