Question

Define Escape velocity. Also derive the formula for escape velocity.​

Answer 1

Definition :

Escape Velocity is referred to as the minimum velocity needed by anybody or object to be projected to overcome the gravitational pull of the planet earth. In other words, the minimum velocity that one requires to escape the gravitational field is escape velocity.

Formula

$v _ {escape} = \sqrt{ \frac{2gm}{r} }$

Basically, escape velocity means escaping the land without any chance of falling back. Therefore, any object or body having escape velocity on the surface of the earth can totally escape the gravitational field of the earth in addition to avoiding the losses due to the atmosphere.

Answer 2

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The Question is Give below

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In physics, 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.

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