144 T^E CALCVLO MOTVS 



Dcnique qiiia corpiis A quoquc ad S \rgctur vi 

 — ^^ hacc contrarie in Z translata dabit infupcr 

 \ires 



fccundum XA-~coCJ ct fccundum YXrA^^"-* 



quac Aircs in corpus Z agentcs coUedae pracbcnt : 



i^ Vim fcc. XA-'^X+l-,{X-ucoC$) + ^\coa 



■ 1°. Vim fcc. X Yr:-^^Y+6(Y-ttfui.0) + irufinJ 



3°. Vimfcc. ZY-^Z + :|iZ, 



quibus cum acctlcrationcs corporis Z fecundum eas- 

 dcm dirccflioncs fmt proportionalcs , ftatuamus pro 

 tcmporis clemcnto r/; condanti fumto : 



d(lX=.-citfr{^ X + ~.X~Buco(J[:^,- Ui)) 

 d(lY -- -a^rc^^ Y-i- l-. Y- Bwfin.O(;i^, - J,)) 



■vbi conCtans a cx vnico motu huius gcncris cogni- 

 to , vehiti cx motu (bhs apparcntc, dcfiniri potclt. 



XV. 



Antcquam autem has formulas cuolnamus , 

 diftantiam SZz::;- in calcuhim de nouo introdndam 

 accuratiiis dcfinirc dcbcmiiSv Cnm antcm nianiti-llo 

 fit: 



SZ'::z:XZ'4-Xr-f-(PS-XY)' 



habebimus : 



ii;«;z:ZZH-XX4-YY-i-««-2//Xcof.^-2«Yrin.» 



quae 



