I wanted to ask how come kepler say that the orbits on which planet rotates is elliptical .... just by obvious saying, what we have learnt is that when the velocity is Perpendicular to force the path traced is circular.....even if we say in reality the actual angle B/W velocity and force is not 90 ....but i question is what makes a planet to go that far from the focci ? try to give an answer easy to understand. or please try to explain the mathematical proof in detail.(adsbygoogle = window.adsbygoogle || []).push({});

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# Proof Of kepler's first law?

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