Question

A satellite is orbiting the earth close to its surface. A particle is to be projected from the satellite to just escape from the earth. The escape speed from the earth is ${\nu }_e$. Its speed with respect to the satellite
(a) will be less than ${\nu }_e$
(b) will be more than ${\nu }_e$
(c) will be equal to ${\nu }_e$
(d) will depend on the direction of projection.

Answer 1

(d) will depend on the direction of projection.For example a body projected vertically requires less escape velocity than a body projected at an angle with the vertical.