Fabri, Honoré, Tractatus physicus de motu locali, 1646

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              <s id="N1959E">
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              Theorema
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              16.
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              </s>
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            <p id="N195AA" type="main">
              <s id="N195AC">
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              Hinc non conſeruatur intactus impetus
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              ; </s>
              <s id="N195B5">quia ſi eſſet intactus, eſſet ſem­
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              per æqualis; igitur haberet ſemper æqualem motum per Ax.3.l.2. igitur
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              motus eſſet æquabilis, contra Th.15. </s>
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            <p id="N195BD" type="main">
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                <emph type="italics"/>
              Theorema
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              17.
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              </s>
            </p>
            <p id="N195CB" type="main">
              <s id="N195CD">
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              Hinc neceſſe eſt aliquid impetus destrui
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              ; </s>
              <s id="N195D6">cum enim non remaneat inta­
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              ctus, & æqualis; nec fiat maior per Th.14. certè fit minor, igitur detra­
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              ctione aliqua per Ax.1.l.2. </s>
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            <p id="N195DE" type="main">
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                <emph type="center"/>
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              Theorema
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              18.
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              </s>
            </p>
            <p id="N195EC" type="main">
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              Singulis inſtantibus aliquid deſtruitur impetus impreſſi
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              ; probatur quia
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              cur potiùs vno quam alio? </s>
              <s id="N195F9">quippe illa ratio, quæ probat de vno probat
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              de ſingulis. </s>
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            <p id="N195FE" type="main">
              <s id="N19600">
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              Theorema
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              19.
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              </s>
            </p>
            <p id="N1960C" type="main">
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              Hinc neceſſariè eadem vel aqualis cauſa deſtructionis debet eſſe applicata
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              ;
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              probatur, quia æqualis effectus æqualem cauſam ſupponit, per Ax.
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              3. l. 2. </s>
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              Theorema
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              20.
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              </s>
            </p>
            <p id="N1962D" type="main">
              <s id="N1962F">
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              Illa cauſa non eſt tantùm aër ambiens vt volunt aliqui
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              ; </s>
              <s id="N19638">quia licèt reſi­
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              ſtat motui, ſeu potius mobili, non tamen eſt ea reſiſtentia, quæ poſſit
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              impetum tam citò deſtruere; </s>
              <s id="N19640">probatur primò, quia ſi hoc eſſet, deſtrue­
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              retur æquali tempore per omnem lineam ſurſum, quod eſt contra expe­
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              rientiam, vt dicemus infrà; </s>
              <s id="N19648">eſſet enim eadem cauſa applicata; </s>
              <s id="N1964C">igitur idem
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              & æqualis effectus; </s>
              <s id="N19652">probatur ſecundò, quia non deſtruit aër primum il­
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              lum gradum impetus naturalis acquiſiti, vt conſtat in motu deorſum, qui
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              tamen eſt imperfectiſſimus; igitur non eſt ſufficiens ad deſtruendum im­
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              petum violentum, niſi longo tempore. </s>
              <s id="N1965C">Tertiò, globus ſursùm projectus
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              aſcendit, & deinde deſcendit æquali tempore; </s>
              <s id="N19662">igitur ſaltem ſingulis in­
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              ſtantibus deſtruitur vnus gradus impetus violenti æqualis primo gradui
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              innato; </s>
              <s id="N1966A">atqui aër non poteſt vno inſtanti deſtruere impetum æqualem
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              primo innato; alioqui non intenderetur motus naturalis. </s>
              <s id="N19670">Quartò, & hæc
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              eſt ratio à priori, quotieſcumque ſunt in eodem mobili duo impetus ad
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              oppoſitas lineas determinati, pugnant pro rata, vt demonſtrauimus l.1.
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              Th. 149. 150. 152. & in toto Schol. & multis aliis paſſim; atqui conſer­
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              uatur ſemper impetus naturalis innatus per Sch. Th.152.n.6.l.1.per Th.
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              9. & Schol.Th.14. & Th.73.l.2. </s>
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              Theorema
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              21.
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              </s>
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            <p id="N19691" type="main">
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              Illa cauſa non eſt entitas corporis mobilis, vel ipſa grauitas, diſtincta ſcili­
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              cet ab impetu innato ſi quæ eſt de quæ alias,
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              probatur, quia non eſſet potior
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              ratio cur vno inſtanti deſtruerentur duo gradus impetus, quàm 3. 4. 5.
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              quippe grauitas exigeret deſtructionem omnium: præterea omnis impe­
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              tus deſtruitur ne ſit fruſtrà per Schol, Th.152. & Th.162.l.1. denique ſi </s>
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