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Question

What is escape velocity?


Solution

Escape velocity is defined as the lowest velocity a body must have in order to escape the gravitational attraction of a particular planet or other object.
Let say, a body is revolving in an orbit of radius $$r$$ around a planet of mass $$M$$.
Escape velocity of body   $$V_e = \sqrt{\dfrac{2GM}{r}}$$       where $$G$$ is gravitational constant

Physics

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