Escape velocity of a rocket fired from the earth towards the moon is a velocity to get rid of the _______?
Correct answer: B. Earth's gravitational pull
- A. Centripetal force due to the earth's rotation
- B. Earth's gravitational pull
- C. Pressure of the atmosphere
- D. Moon's gravitational pull
Explanation
Escape velocity is the minimum speed needed to escape a body's gravitational field without further propulsion. For a rocket leaving Earth toward the Moon, the relevant pull initially is Earth's gravity, not atmospheric pressure or the Moon's weaker pull.
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