Somebody knows as to prove the expression below? (V (t) is the volume of a sphere in free fall, following a geodesic one).(adsbygoogle = window.adsbygoogle || []).push({});

(delta V(t)/ V(t) = -(1/2) (d^2 V / dt^2) (delta t)^2

delta= [Tex]\delta[/Tex]

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# Change volume V(t)

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