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JEE PHYSICS MCQ: GRAVITATION

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A body is projected upwards with a velocity of

3 \times 11.2 \mathrm{~km} \mathrm{~s}^{-1}

from the surface of earth. What will be the velocity of the body when it escapes from the gravitational pull of earth?

View answer and explanation

Correct option: D

\sqrt{8} \times 11.2 \mathrm{~kms}^{-1}

Option D (

\sqrt{8} \times 11.2 \mathrm{~kms}^{-1}

) is correct because it calculates the final velocity after escaping Earth's gravity using energy conservation.

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