( 178 ) 
In the eighth Experiment, the Ball ii ihould have 
fifen to near five Inches and three quarters, for the 
Ball 6 falling with the Velocity, 8 muft have had its 
Force =18x8x6 — 384; and then, that the Ball iz 
might have the fame Force or Quantity of Motion, it 
mnfi: rife near to 5, 7 becaufe 5,7 x 5',/x ix = 389,88. 
'In the ninth, iz fhould have rifen to 8; for the 
Ball 3 muft have had its Force zz 16x16x5 — 768, 
and if 12 receiv'd its whole Force it muft have rifen to 
8 becaufc 8x8x12 = 768. 
In the fecond Part of the tenth Experiment, 12 
fiiould have rifen to near 5',becaufe 12 x 12 x2 =: 288, 
and 5* X 5 K 12 is but 300. 
In the eleventh, the Ball 12 (thirty times heavier 
than the little one) muft have gone to 2 | Inches, be- 
caufe the Momentum of the little Ball being = 1 5* k i y 
X I =: 22y, that of the Ball 12 muft be =: 2,75” x 2,7y 
X .12 — 226 &c. 
It may be here alledg’d, that one ought to fubtradl 
Momentum^ with which the great Ball comes upon 
the little one ; but that won’t mend the Matter much, 
tho’ indeed the Dificrence will be lefs. For, 
In the eighth Experiment, if we fubtrad: 4X 4 x 12 
192 from 389,88 there will remain 197,88, and the 
Ball 12 will go but to 4 ; but then in Experiment 9, if 
we fiibtrad: the fame N° 192 from 768, we fliall have 
576, which would carry 12 to near feven Degrees, be- 
caufe 7 xyx 12 — 5-88. 
In the tenth Experiment, there is only 48 to be fub- 
rraded ; and in the eleventh only ly ; and therefore 
the Velocity of 12 will very much fall fhort of what is 
agreeable to the new Opinion. 
After the Experiments made, and what has been laid, 
till thefe Confequences are overthrown, no notice 
ought to be taken of any Objedions, or new Experi- 
ments. 
