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4. | The velocity with which a projectile must be fired so that it escapes the earth’s gravitational field doesn’t depend on? | |
A. | Mass of the earth | |
B. | Mass of the projectile | |
C. | Radius of the orbit | |
D. | Universal gravitational constant | |
Answer: Option A | |
Explanation: | |
Escape velocity does not depend on the mass of the projectile. |
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