[ 5 * 7 -] 
who meafure Force by the fimple Ratio of the Vclo^ 
city 5 they will in their Meaning be the fame : Juft as 
he who would call a Foot twenty-four Inches, with- 
out changing other Meafures of Length, when he 
fays a Yard contains a Foot and a half, means the 
very fame as you do, when you fay a Yard contains 
three Feet. 
But tho’ I allow this Meafure of Force to be dif- 
tinft, and cannot charge it with Falfhood, for no 
Definition can be falfe, yet I fay in the firft place, 
it is lefs fi mple than the other i for why fhould a 
duplicate Ratio be ufed where the fimple Ratio 
will do as well ? In the next place,, this Meafure 
of Force is lefs agreeable to the common Ufe of the 
Word Force, as hath been fhewn above 5 and this 
indeed is all that the many laboured Arguments and 
Experiments, brought to overturn it, do prove. 
This alfo is evident, from the Paradoxes into which 
it has led its Defenders. 
We are next to confider the Pretences of the 
Leibnit zian , who will undertake to prove by De~ 
monftration, or Experiment, that Force is as the 
Square of the Velocity. I ask him firft, what he 
lays down for the firft; Meafure of Force? The only 
Meafure I remember to have been given by the 
Phiiofophers of that Side, and which feems firft of 
all to have led Leibnitz into his Notion of Force, 
is this : The Height to which a Body is impelfd by 
any impreffed Force, is, fays he, the whole EfFedt 
of that Force, and therefore mud be proportional 
to the Caufe: But this Height is found to be as the 
Square of the Velocity which the Body had at the 
Beginning of its Motion. 
Y y y 2 
In 
