Fabri, Honoré, Tractatus physicus de motu locali, 1646

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              HGV, motus fieret per HX, ſed HX eſt æqualis HM; </s>
              <s id="N23ECC">igitur deſtruitur
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              ſubduplus impetus, quia eſt fruſtrà; </s>
              <s id="N23ED2">ſed HC eſt ſubdupla HA: </s>
              <s id="N23ED6">præterea
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              impetus innatus retrahit mobile per HE minùs, quàm AD iuxta eam
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              proportionem, in qua motus per HE eſt minor quàm motus per AD; </s>
              <s id="N23EDE">ſed
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              motus per HE eſt ad motum per AD vt HE ad AE, vel vt HC ad HA; </s>
              <s id="N23EE4">
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              igitur illa vis, quæ retrahit mobile per HE eſt ad eam, qua retrahitur
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              per AD vt HC ad HA; </s>
              <s id="N23EEB">ſed in eadem proportione deſtruitur impetus,
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              quo mobile fertur ſurſum, in qua retrahitur deorſum; </s>
              <s id="N23EF1">igitur impetus de­
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              ſtructus in H eſt ad deſtructum in perpendiculo vt HC ad HA; ergo
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              vt ſinus rectus arcus inferioris eſt ad ſinum totum. </s>
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              <s id="N23EFB">Dictum eſt eodem tempore; </s>
              <s id="N23EFF">nam minori tempore minùs impetus de­
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              ſtruitur, plùs verò maiori; </s>
              <s id="N23F05">vnde quando comparatur impetus deſtructus
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              in plano inclinato ſurſum cum deſtructo in verticali, ſemper intelligi­
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              tur vtrumque deſtrui eodem tempore; </s>
              <s id="N23F0D">alioquin vitioſa eſſet proportio,
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              & comparatio; idem dico de impetu producto, quod de deſtructo. </s>
            </p>
            <p id="N23F13" type="main">
              <s id="N23F15">
                <emph type="center"/>
                <emph type="italics"/>
              Corollarium.
                <emph.end type="italics"/>
                <emph.end type="center"/>
              </s>
            </p>
            <p id="N23F21" type="main">
              <s id="N23F23">Inde colliges in eadem proportione minùs impetus deſtrui in aſcenſu
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              per planum inclinatum, quâ minùs producitur in deſcenſu. </s>
            </p>
            <p id="N23F28" type="main">
              <s id="N23F2A">
                <emph type="center"/>
                <emph type="italics"/>
              Theorema
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              17.
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              </s>
            </p>
            <p id="N23F36" type="main">
              <s id="N23F38">
                <emph type="italics"/>
              Totus impetus qui concurrit ad deſcenſum funependuli, non concurrit ad
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              aſcenſum,
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              prob. </s>
              <s id="N23F42">quia impetus innatus non concurrit ad aſcenſum, vt
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              conſtat ex dictis alibi; ſed hic concurrit ad deſcenſum. </s>
            </p>
            <p id="N23F48" type="main">
              <s id="N23F4A">
                <emph type="center"/>
                <emph type="italics"/>
              Theorema
                <emph.end type="italics"/>
              18.
                <emph.end type="center"/>
              </s>
            </p>
            <p id="N23F56" type="main">
              <s id="N23F58">
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              Aliquis etiam gradus impetus concurrit ad aſcenſum, qui non concurrit
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              ad deſcenſum,
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              probatur, quia vltimo inſtanti deſcenſus aliquid impetus
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              noui producitur quantumuis minimi, quia ſingulis inſtantibus motus
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              deorſum aliquid impetus accedit; </s>
              <s id="N23F67">ſed ille impetus non concurrit ad mo­
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              tum deorſum; </s>
              <s id="N23F6D">quia cum primo illo inſtanti, quo eſt, non concurrat ad
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              motum, cumque illud inſtans ſit vltimum motus deorſum; </s>
              <s id="N23F73">certè ad mo­
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              tum deorſum non concurrit, ſed ad motum ſurſum concurrit, nam pri­
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              mo inſtanti, quo eſt, exigit motum pro ſequenti; eſt autem ſequens
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              inſtans primum aſcenſus. </s>
            </p>
            <p id="N23F7D" type="main">
              <s id="N23F7F">
                <emph type="center"/>
                <emph type="italics"/>
              Theorema
                <emph.end type="italics"/>
              19.
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              </s>
            </p>
            <p id="N23F8B" type="main">
              <s id="N23F8D">
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              Aſcenſus funependuli non eſt æqualis deſcenſui:
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              patet experientiâ; ratio
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              eſt manifeſta; </s>
              <s id="N23F98">quia impetus innatus non concurrit ad aſcenſum, licèt ad
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              deſcenſum concurrat; </s>
              <s id="N23F9E">nec dicas impetus gradum vltimum non concur­
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              rere etiam ad deſcenſum, licèt concurrat ad aſcenſum; </s>
              <s id="N23FA4">nec enim eſt pa­
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              ritas; </s>
              <s id="N23FAA">quia impetus innatus, ſeu primus gradus eſt perfectiſſimus omnium
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              productorum; </s>
              <s id="N23FB0">vltimus verò imperfectiſſimus, tùm quia producitur mi­
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              nori tempore, tùm quia producitur in plano inclinatiſſimo; igitur ſi
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              comparetur cum primo, pro nullo ferè haberi deber impetus. </s>
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