1.

The distance between centre of the earth and moon is 384000 km. If the mass of the earth is \[6\times {{10}^{24}}kg\] and \[G=6.66\times {{10}^{-11}}N{{m}^{2}}/k{{g}^{2}}\]. The speed of the moon is nearly                                      [MH CET 2002]

A. 1 km/sec
B.               4 km/sec
C.             8 km/sec
D.               11.2 km/sec
Answer» B.               4 km/sec


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