Gassendi, Pierre, De proportione qua gravia decidentia accelerantur, 1646

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              <s id="s.000884">
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              acquiſito ab vſque A. </s>
              <s id="s.000885">Et quamvis tu ſis inferiùs di­
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              cturus velocitatem acquiſitam ex E in G duplam eſſe
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              acquiſitæ in E (nempe dum ſtatuis primum gradum
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              acquiri à ſolo medio ipſius AE) & ſic velle debeas
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              gradum acquiſitum in E, ſeu DE perire; quoniam re­
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              periri in G, niſi duos gradus non vis: cùm ſi acquiſitus
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              in E remaneret, futuri eſſent tres: vide nihilominùs
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              quid hoc loco ſequatur. </s>
              <s id="s.000886">Nam ſi pereunte gradu DE,
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              duo gradus, quos vis reperiri in G, vt puta FP, &
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              PG, acquirendi ſint per ſolum ſpatium EG, factis vi­
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              delicet augmentis ſecundum triangulum, qui ducta
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              linea ex E in F ſit EFG, neceſſe eſt, accelerationis
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              æquabilitas interrumpatur prorſus in E; & cùm ibi
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              acceleratio ad ſuum redierit principium, non ſit dein­
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              ceps futura tanta, quanta fuerit in E, niſi in medio
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              ſpatij EG. </s>
              <s id="s.000887">Itaque gradus velocitatis DE acquiſitus
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              ex A in E non perit, ſed manet; & cum mobile pro­
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              inde peruenit ad G, talis gradus euadit PG, ac illi ad­
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              iunctus reperitur FP acquiſitus interim per augmen­
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              ta facta ſecundum triangulum DFP. </s>
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              <s id="s.000888">Quæro deinde, an gradus velocitatis DE manens,
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              dum mobile percurrit EG, otioſus ſit, an aliquid agat?
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              </s>
              <s id="s.000889">Non dices ſanè otioſum eſſe; alioquin enim mobile
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              tempore nihilo breuiore perueniret ex E in G, quàm
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              ex A in E, vt putà tranſlatum æquali ſolùm velocita­
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              te. </s>
              <s id="s.000890">Igitur agit aliquid. </s>
              <s id="s.000891">Requiro, quantum? </s>
              <s id="s.000892">hoc eſt,
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              Si concipiamus mobile, poſtquàm peruenit ad E, non
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              accipere amplius vlla augmenta, qualia acquiri dixi­
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              mus ſecundum triangulum DFP, ſed moueri ſolùm
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              æquabiliter velocitate acquiſita DE: requiro quanto </s>
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