Fabri, Honoré, Tractatus physicus de motu locali, 1646

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              producatur vnus gradus ſibi æqualis primo inſtanti; cur enim duo po­
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              tiùs, quàm tres? </s>
            </p>
            <p id="N19E66" type="main">
              <s id="N19E68">
                <emph type="center"/>
                <emph type="italics"/>
              Theorema
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              59.
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              </s>
            </p>
            <p id="N19E74" type="main">
              <s id="N19E76">
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              Secundo ſtatim inſtanti deſtruit alterum gradum
                <emph.end type="italics"/>
              : </s>
              <s id="N19E7F">quippe eſt cauſa ne­
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              ceſſaria; </s>
              <s id="N19E85">igitur ſtatim primo inſtanti exigit deſtructionem; </s>
              <s id="N19E89">non certè
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              pro primo inſtanti per Th.56.igitur pro ſecundo, atque ita pro aliis dein­
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              ceps; deſtruitur autem, ne ſit fruſtrà eo modo, quo diximus ſuprà. </s>
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            <p id="N19E91" type="main">
              <s id="N19E93">
                <emph type="center"/>
                <emph type="italics"/>
              Theorema
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              60.
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              </s>
            </p>
            <p id="N19E9F" type="main">
              <s id="N19EA1">
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              Hinc optima ratio illius instituti naturæ, quo factum eſt, vt impetus innatus
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              numquam destruatur
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              ; </s>
              <s id="N19EAC">ne ſi aliquando deſtrueretur, nulla eſſet cauſa de­
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              ſtructiua impetus violenti; ac proinde æquabilis eſſet, ſemperque dura­
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              ret, deſtructiua inquam ſuo modo. </s>
            </p>
            <p id="N19EB4" type="main">
              <s id="N19EB6">
                <emph type="center"/>
                <emph type="italics"/>
              Theorema
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              61.
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              </s>
            </p>
            <p id="N19EC2" type="main">
              <s id="N19EC4">
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              Hinc corpus quod non grauitat, facilè proijcitur, vel impellitur
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              : </s>
              <s id="N19ECD">ſic na­
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              uis aquis innatans, nubes in aëre liberatæ; halitus, atque adeo ipſæ partes
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              aquæ, quas perexiguus lapillus in orbes penè innumeros agit, ne quid
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              dicam de partibus aëris, quæ tam citò & procul mouentur, vt conſtat in
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              ſono, motu ſcilicet ferè æquabili. </s>
            </p>
            <p id="N19ED9" type="main">
              <s id="N19EDB">
                <emph type="center"/>
                <emph type="italics"/>
              Theorema
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              62.
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              </s>
            </p>
            <p id="N19EE7" type="main">
              <s id="N19EE9">
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              Hinc etiam è contrario corpus grauius difficiliùs ſurſum proijcitur
                <emph.end type="italics"/>
              : </s>
              <s id="N19EF2">tùm
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              quia plures partes impetus ſunt producendæ in ſubjecto grauiore quod
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              pluribus partibus conſtat, tùm impetus innatus maior eſt, non quidem in
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              intenſione ſed in extenſione, ac proinde impedit ne plures gradus pro­
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              ducantur; quippe maius impedimentum plus impedit, quis hoc neget? </s>
            </p>
            <p id="N19EFE" type="main">
              <s id="N19F00">
                <emph type="center"/>
                <emph type="italics"/>
              Theorema
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              63.
                <emph.end type="center"/>
              </s>
            </p>
            <p id="N19F0C" type="main">
              <s id="N19F0E">
                <emph type="italics"/>
              Omnes partes impetus productæ in mobili primo instanti concurrunt ad
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              motum ſecundi instantis
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              ; probatur, quia alioqui aliqua eſſet fruſtrà, quod
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              dici non debet. </s>
            </p>
            <p id="N19F1B" type="main">
              <s id="N19F1D">
                <emph type="center"/>
                <emph type="italics"/>
              Theorema
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              64.
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              </s>
            </p>
            <p id="N19F29" type="main">
              <s id="N19F2B">
                <emph type="italics"/>
              Concurrunt omnes illæ, quæ inſunt eidem parti ſeu puncto mobilis
                <expan abbr="commun">communes</expan>
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              quaſi actione vel exigentia
                <emph.end type="italics"/>
              ; patet ex dictis de impetu, quia concurrunt ad
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              velocitatem, quæ eſt indiuiſibilis actu. </s>
            </p>
            <p id="N19F3C" type="main">
              <s id="N19F3E">
                <emph type="center"/>
                <emph type="italics"/>
              Theorema
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              65.
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              </s>
            </p>
            <p id="N19F4A" type="main">
              <s id="N19F4C">
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              Non ponitur tamen totus motus ſecundo instanti, quem exigunt primo;
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                <lb/>
              quia impetus innatus aliquid detrahit, cum exigat motum deorſum per
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              lineam oppoſitam, igitur imminuitur motus pro rata. </s>
            </p>
            <p id="N19F58" type="main">
              <s id="N19F5A">
                <emph type="center"/>
                <emph type="italics"/>
              Theorema
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              66.
                <emph.end type="center"/>
              </s>
            </p>
            <p id="N19F66" type="main">
              <s id="N19F68">
                <emph type="italics"/>
              Hinc ille gradus motus qui non ponitur ſecundo instanti respondet gradus
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              impetus qui destruitur
                <emph.end type="italics"/>
              ; cum vterque habeat
                <expan abbr="eãdem">eandem</expan>
              menſuram, ſcilicet
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              impetum innatum. </s>
            </p>
          </chap>
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