Question

define escape velocity of a body. Derive an expression for escape velocity of a body from the surface of earth.

Answer 1

the highlited area is the expression for escape velocity...it is the velocity at which an object should be projected towards the sky so that it can overcome the gravitational force of earth.

Answer 2

$\textbf{Answer :}$



$\huge\textbf{Escape Velocity :}$



It is the minimum velocity required by an object to escape from gravitational field of a planet such that it never comes back.



$\textbf{Derivation is in Attachment !!}$

=====================================