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Corpora Sphaerica homogenea & aequalia, resistentiis in duplicata ra∣tione velocitatum impedita, & solis viribus insitis incitata, tem∣poribus quae sunt reciproce ut velocitates sub initio, describunt sem∣per aequalia spatia, & amittunt partes velocitatum proportionales totis.
Asymptotis rectangulis CD, CH descripta Hyperbola quavis BbEe secante perpendicula
AB, DE sunt ultimis ab, de, & propterea (dividendo) par∣tibus etiam suis amissis AB−ab, DE−de proportionales. Q.E.D.