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# Title: [Johannis Wallis S. T. D. Geometriae Professoris Saviliani, in Celeberrima Academia Oxoniensi; Opera Mathematica] Johannis Wallis S. T. D. Geometriæ Professoris Saviliani, in Celeberrima Academia Oxoniensi; Opera Mathematica (shelfmarks Leibn. Marg. 100:1/2, Stück 1; Leibn. Marg. 100:1/2)
# Folio 1029, page id 851387705:1049
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ProP. IX.
que incelligacur porro uirique Tuberati Celeritas (quae B relpieic)
m L n
seu rancundem recrorsum addi; (dux communis vel addicio vel subductio
impulsus ralorem non immUTAE, Per PrOP. 4. hujus:) Ouo tiat Celeritas A,
m  rC = -, rCi; _ Celericas B, OC. -
rC -
ons
m+ n C --
m+  C.
quae itaque sunt Ponderibus reciproce proportionales. Revercutientur itaque
(Per prOP. 3. hujus) eisdem Celericatibus uraque quibus accesterant: HOC ett,
A, Celeritate =- rC, (FetrONTUM;) e B, Celeritate =
Cum.) Idemque erie impulsus racio in Calu praetenci. Adeoque si reltituatur
vis A Fucura Celeritas 
M + 1
C.
n f = rC Prorsum; habebitur Gra.
M. F. 1
rC = m = 1
m F  rC (prortum rel
retrortum prout m vel n majus tuerie; meura vero si sinc aequalia;) ee Ciravis B,
Cclericas- -rC +
M + n
M
2. M
m + n  C. = Im +. n
sed cestncta
PRO P. IX.
Si duo Craria (Flastica) urcunque vel A qualia vel Tnaequalia, et qui-
buscunque Celeritatibus, Ferantur utraque per candem rectam, ad
easdem partes; (ita tamen ut insequens, majore Celeritate latum,
in Ancecedens directe impineat: J Ferentur ucraque, POst Conta-
etum, eis Celeritatibuo, et ad cas parteo, quas subjectus Calculus in-
dicabit.
londitosit eestu
CTF Ancecedentis B, pondus n P, Celeritas SC prortum: Seguentis A, pondus Fie. 20r
Om P, Celeritas (major) rC = sC f sC. Frit F laceris Vis relticurira (Ictui
aqualis)
2. M 1
p+n
mn
cans, adeoque vi urrinque dimidiar in F
Celericarem contert. -
Celexitarem H m F 
1emr. Lns
lus clet) Celericare communi
n S 2 = m
FCi Crari a, propter pondus m P,
el sceita F
En pec prOP. 3. CaP. 12. Ouae ilaque b
uerobique addatur; habebicur Craris A Fucura Celexitas, - - 
mr. = n5 = nt mr-  nr. F 2n5
m. F n
m L n
mr FnS
m + n mtn
C (prortum vel retTONSIM, PTOUT L8
num f vel = praeraluerie, adeoque neurra si aequipolleanc;) _ Craris B, Ceteri.
M
123 -- +C
mr. Lns m+ L mr +ns
2mr- ms +ns
mtnmtn mn min
ostendendum erat.
hanat
0000003
Alter