( 2P0 ) 
1, The Balls being of two Ounces each (of Ivory), 
were, at the fame injftant of Time, let loofe from A and 
B, each diftant twelve Inches from C, and both came 
to C at the fame Time. Here the equal Forces will 
agree with the Produd of the Maifes into the Veloci- 
ties, or into the Squares of the Velocities ^ becaufc 
AkI2:::z:Bxi 2, as well as Ax 144 is equal to 
Bx 144, 
2. If A be taken of four Ounces Weight, and let go 
from D, or fix Inches, whilfl: B, frill equal to two, 
moves from 1 2 Inches , both Bodies will again meet at 
C : therefore here the equal Forces muft be exprefs’d by 
theMafies into the Velocities, and not into their Squares * 
for tho’ A X 6 be equal to B x 1 2 (4 x 6 zr: 2 x 1 2), 
A X 6 X 6, or 144 is but half of Bx 12 x 12, or 288. 
Whereas if the Forces had been as Folenus affirms, B 
fliouid have been let loofe only from 8,4 Inches. 
5. When A is fix Ounces, it is let loofe only from 
E, or 4 Inches, to meet at C with B let loofe from 12^ 
for then Ax4~ B^xi2, whilft AX4X4, or 96, is 
three times lefs than Bx 1 2 x 1 2, or 288. So that ac- 
cording to Folenus, B raufr have been let loofe from 7 , 
but in that Cafe it comes fooner to C than A. 
"N. B, The Weight W muft be greater than the 
Weight of both Balls, leaft the Fridion of the Table 
fhould fpoil the Experiment. 
c 
III. An 
