Q. A body is orbiting very close to the earth’s surface with kinetic energy KE. The energy required to completely escape from it is
A) $KE$
B) $2\ KE$
C) $\frac{KE}{2}$
D) $\frac{3KE}{2}$
Explanation
(a) The energy given to the body so as to completely escape from its orbit is equal to its kinetic energy KE.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.