MHT CET Physics question

During a journey from earth to the moon and back, the greatest energy required for the space ship rocket is to over come

(A)The earth's gravity at take offCorrect
(B)The moon's gravity at lunar landing
(C)The moon's gravity at lunar take off
(D)The force at point where the pull of the earth and moon are equal and opposite

Answer: (A)

Solution

The earth's surface escape speed () is far greater than the moon's (), so the take-off from the earth needs

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Question ID VK-059774