Q. 17

A satellite is orbiting the earth close to the surface. A particle is to be projected from the satellite to just escape from the earth. The escape speed from the earth is
A. Will be less than ve

B. Will be more than ve

C. Will be equal to ve

D. Will depend on direction of projection.

Answer :

The speed of the particle depends on the angle of projection. If an object is projected at less angles, the earth’s gravitational force will be large and hence the required speed would be more. However, if its projected vertically, the escape speed would be less.

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