Question

What do you mean by escape velocity ???​

Answer 1

Answer

It is the minimum speed with which a body at the surface of earth is to be projected to escape from gravitational field of earth. It is = ( 2G M / r )^½ = 11.2 km/s. It does not depend upon the mass of the body or direction of projection.

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Answer 2

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In physics (specifically, celestial mechanics), escape velocity is the minimum speed needed for a free, non-propelled object to escape from the gravitational influence of a massive body, that is, to eventually reach an infinite distance from it.