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Answer #1:

the rockets need to go that fast so that it can escape the earth's gravitational pull,

so if you were on jupiter, it would have to go faster.

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Clarification #1:

There's no limit to the distance over which Earth's gravity acts.

But the faster you're going when you leave, the more time it takes for Earth's

gravity to slow you down, turn you around, and make you start falling back.

There is a certain speed at which, mathematically, the time it takes for that

to happen becomes infinite. So, even though Earth's gravity never stops pulling

to bring you back, that's the speed at which we say the rocket has 'escaped'.

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11y ago

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