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Question

What is escape velocity?

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Solution

Escape velocity is defined as the velocity a body must have in order to escape the gravitational attraction of a particular planet or other object.

Let's say, a body is revolving in an orbit of radius r around a planet of mass M.
Escape velocity of body ve=2GMr
where

ve = escape velocity

G = universal gravitational constant

M = mass of the body to be escaped from

r = distance from the center of the mass


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