Physics, 07.04.2020 21:31 ABRANLINLCON
A rocket has landed on planet x, which has half the radius of earth. An astronaut onboard the rocket weighs twice as much on planet x as on earth. If the escape velocity for the rocket taking off from earth is u0 , then its escape velocity on planet x is
(a) 2u0
(b) 2u0
(c) u0
(d) u0 2
(e) u0 4
Answers: 3
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