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An object is thrown from the surface of the moon. The escape speed for the object is
(a) \( \sqrt{2 g^{\prime} R_{m}} \), where \( g^{\prime}= \) acceleration due to gravity on the moon and \( R_{m}= \) radius of the moon
(b) \( \sqrt{2 g^{\prime} R_{E}} \), where \( g^{\prime}= \) acceleration due to gravity on the moon and \( R_{E}= \) radius of the earth
(c) \( \sqrt{2 g R_{m}} \), where \( g= \) acceleration due to gravity on the earth and \( R_{m}= \) radius of the moon
(d) None of the above
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