Question

If an object is projected from surface of earth with
speed of k times of escape speed, then interstellar
speed of object will be (g = acceleration due to
gravity at surface of earth, R = radius of earth)
(1) √2gR
(2) V2gR(K2 - 1)
(8) 2k/GR
(4) 27gR(k2 - 1)
​

Answer 1

Answer:

(1) √2gR

I'm not sure Actually