*$_The escape velocity of a body on earth which is independent of its mass is about __________ km/second.?

*$_The escape velocity of a body on earth which is independent of its

1.	*$_The escape velocity of a body on earth which is independent of its mass is about __________ km/second.?
A.	3
B.	7
C.	11
D.	15
Answer» D. 15