Question

The escape velocity for a body projected vertically upwards from the surface of earth is 11km/s. If the body is projected at an angle of 45° with the vertical, the escape velocity will be

(a) 11√2km/s 

(b) 22km/s

(c) 11km/s 

(d) 11/√2m/s.

Answer 1

(c) : The escape velocity of a body does not depend on the angle of projection from earth. It is 11km/sec.