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# Title: [Physica Demonstratio Qua Ratio, Mensura, Modus, Ac Potentia, Accelerationis Motus In Naturali Descensu Gravium Determinantur] Physica Demonstratio Qva Ratio, Mensvra, Modvs, Ac Potentia, Accelerationis Motvs In Natvrali Descensv Gravivm Determinantvr (shelfmark Leibn. Marg. 126)
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DE RCCELERATIONE MOEIS
dicis perlualerit. Audiisitur mi Casende, Q Me. lib. 2.
cum mirare tanei riri demonstrationem. Si acce- noua
scient. dd
leratio motiss (inquie) in descensu crauium, aequali-moin
bus spariis aequalia sumeret velocitatis incrementa, es-
accele-
rato
senr sine dubio velocitates inter se vr emensa spatia. initio.
At quotie scumque velocitates inter se sunt vt
emensa spatia, debent necessario ea spatia, aut
eodem, aut aequali tempore percurri. Si isitur
velocitas acquisita periotam AC, eam rationem
habeat ad velocitarem acquisitam per AB,
quam sparium AC, ad sparium AB; necesse est.
visparium torum AC, eodem, aut aqualitem-
pore decurratur, quo sparium AB absoluitur.
Impossibile est autem vt corpus rrane descendens
per AC, eodem aut aequali tempore percurrasto-
tam. AC, quo percurrit partem eius AB, nisi motus
fiat in instanti. Tam impossibile est icitur, Vt veloci-
tates in descensueranium inter se sint vremensa spatia
(ac proinde vteriam aequalibus spatiis crescant aequali-
cer) quam impossibile est morum illum fieri in instanti.
Proh cuam mi Gassendo, Philolophorum -- 8.
que omnium, ac Mathematicorum Ademi
iltud- ne demonstrare cst: Ec camen mirum
quancum Galilaus de hac (vepucac) subrili, cla-
ra, cuidenri, ac machemarica demonstratione
Sibi applaudact, quam inceora pagina miritcis pronime
+ Joc0
laudibus exaggerar. Sedillud multo adhucmi - citato.
rabilius, quod Lynccus Philosophus ac Ma-
thematicus, LyHCCOTUIqUE PrinCCPS, In tam
aperca luce excuriat; et vis eius nOmInIS EAM
Facil
sub finem emensi s
sita
acqua
Patalociimus Ca-
ilxi
Negatur. Neque enim otitati
temnis
sunt.
sub motes finem acquio
spatiis proportionales faciunt
aequale, sed velocitates
quibus tota spatia per cursa
est ergo verissimum
oni Galilaei inosse
ratiolmatu
paralogismum. Quanquam
Cazraequ non videatur cum
satis retexisse