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1. |
The radius of the moon is roughly 2000km. The acceleration of gravity at the surface of the moon is about ( frac{g}{6} ), where g is the acceleration of gravity at the surface of the earth. What is the velocity of escape for the moon?(Take g=10ms-2) |
A. | 2.58 kms<sup>-1</sup> |
B. | 4.58 kms<sup>-1</sup> |
C. | 6.28 kms<sup>-1</sup> |
D. | 12.28 kms<sup>-1</sup> |
Answer» B. 4.58 kms<sup>-1</sup> | |