C ‘89 ) 
« r= V 2 ibique (ubdituto daftro fimili tertio conditu- 
“ ente cum MN angulum MNR femiredum, quo 
“ fcilicet M R iterum He =CP=i ; patet fimiliter 
“ motum per MR cotum impendi in tenfionem daftri 
“ N, corpore interim moveri pergente diredione 6 c 
“ celeritate R I. Denique fi hac celeritate refidua 
“ impingat perpendiculariter in elaftrum O, huic ten- 
“ dendo cotam (uam vim reliquam dabit; ipfum ita- 
que corpus ad quietem redigetur. Hifce ita prse- 
rnnlis, paiet nunc potentiam corporis C taniam tu- 
ilTe, ut per fe lolum tendere polTit precise quatuor e- 
“ laflra talia, ad qu^ fingula feorfim tendenda requi- 
“ rltur dimidia velocitas corporis arqualis ipfi C, ade- 
“ oque cum efiedus illius quadruple major fit quam 
“ effedus hujuS;, evidens efl queque vim corporis velo- 
“ citate 2. grad, quadruplam effe vis corporis ejuldem, 
“ vel a:qualis, velocitate i grad. 
“ Haud abiimili modo demonflrarem corpus C ve- 
“ locitate 3 grad, tendere poire9 elaflra, ad quorum u- 
“ num tendendum unus velocitatis gradus in eo cor- 
“ pore requiritur, 6 c tandem in genere numerum ela- 
“ ftrorum tenlorum Temper efTe quadratum numeri 
“ graduum velocitatis. Unde igitur fequetur, vires 
“ corporum scqualium effe in duplicata ratione celeri- 
“ tatum. Q^b. D. 
1. This Argument is founded entirely on the com- 
monly received Dodrine of the Compofition and Re- 
folution of Forces, and not upon any decifive Expe- 
riments, that have been adually made upon this occa^ 
fion. 
2. All that is proved from this Dodrine, is, that a 
Body moving with two Degrees of Velocity, may be 
made to bend 4 ; with 3 Degrees of Velocity it may 
be made to bend 9 fimilar Springs, each deftroyingone 
Degree 
