Fields D.1 Gravitational Fields & Potential (id: 04ad14d99)

本题目来源于试卷: Fields D.1 Gravitational Fields & Potential ，类别为 IB物理学

[单选题]
Planet X has half the massrl2o;ex+4p1-ere cfi9 orq1 mkl9ew( and twice the diamoqc5(kb sa ;p:eter of planet Y. The escape speed f :5aq(c;k obpsrom the surface of planet X is given by v. What is the escape speed from the surface of planet Y ?

A. $\frac{v}{2}$
B. $\frac{v}{\sqrt{2}}$
C. $v\sqrt{2}$
D. 2v


参考答案:  D


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