Question

A body is projected from the surface of earth with a velocity 2v_e where v_e is the escape velocity. The velocity of the body when it escapes the gravitational field of the earth is :

• A.
• B.
• C.
• D. $\sqrt { 11 } \mathrm { v } _ { \mathrm { e } }$

Answer 1

Answer: (B)

Answer 2

v = $\sqrt { \mathrm { n } ^ { 2 } - 1 }$ v_e

or v = $\sqrt { 2 ^ { 2 } - 1 }$ v_e

v = $\sqrt { 3 }$ v_e