If earth has a mass nine times and radius twice that of the planet mars, calculate the maximum velocity required by a rocket to escape from the gravitational field of mars. Take escape velocity on the earth's surface to be 11.2 km/s.

If earth has a mass nine times and radius twice that of the planet mar

1.	If earth has a mass nine times and radius twice that of the planet mars, calculate the maximum velocity required by a rocket to escape from the gravitational field of mars. Take escape velocity on the earth's surface to be 11.2 km/s.
A.	5.279 km/s
B.	23.75 km/s
C.	9144 km/s
D.	3.865 km/s
Answer» B. 23.75 km/s

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If earth has a mass nine times and radius twice that of the planet mars, calculate the maximum velocity required by a rocket to escape from the gravitational field of mars. Take escape velocity on the earth's surface to be 11.2 km/s.

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