How far is alpha from their mutual center of mass when

(a) How far is alpha from their mutual center of mass when alpha and beta are 100km apart?

(b) What is the velocity of their center-of-mass frame, as measured in beta's frame?

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How far is alpha from their mutual center of mass when : a how far is alpha from their mutual center of mass when alpha and beta are 100km apart?b what is the velocity of their

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