1.

A satellite with kinetic energy \[{{E}_{k}}\] is revolving round the earth in a circular orbit. How much more kinetic energy should be given to it so that it may just escape into outer space           [KCET (Engg./Med.) 2001]

A.             \[{{E}_{k}}\]
B.             2\[{{E}_{k}}\]
C.             \[\frac{1}{2}{{E}_{k}}\]      
D.             3\[{{E}_{k}}\]
Answer» B.             2\[{{E}_{k}}\]


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