Q. The escape velocity for a body projected vertically upwards from the surface of the earth is $11.2\ \ kms^{- 1}$. If the body is projected in a direction making an angle of $45{^\circ}$ with the vertical, the escape velocity will be
A) $11.2\ \ kms^{- 1}$
B) $11.2 \times \sqrt{2}\ kms^{- 1}$
C) $11.2 \times 2\ kms^{- 1}$
D) $11.2/\sqrt{2}\ kms^{- 1}$
Explanation
(a) Escape velocity of a body from the surface of earth is 11.2 $kms^{- 1}$ which is independent of the angle of project
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.