A particles is fired vertically from the surface of the earth with a velocity `Kv_(e)` , where `u_(e)` is the escape velcocity ans `Klt 1`. Neglecting air resistance , calcualte the heightto which it will rise from the surface of the earth .(R= radius of the earth ).

Options

A. `(R )/(1 - k^2)`
B. `(R )/(k^2)`
C. `(1 -k^2)/( R)`
D. `(k^2)/( R)`

Answer

A

Explanation

`(R )/(1 - k^2)`