57 i iWh vince’s Investigation of the 
ftroke, but would in bach cafe, if p were immediately 
taken away, continue to revolve about a fixed axis. It 
may alfo be obfervecl, that when dc is greater than 2gc, 
or the velocity of q_is politive, that, becaufe it is im- 
poffible for o_to continue its progreffive motion, it is 
only to be underftood, that if immediately after the im- 
pact the body p were removed, the body qj would then 
proceed with fuch a velocity. 
Cor . 6. Suppofe the bodies to be non-elaftic, and let 
M be the magnitude of a body placed at d, which, be- 
ing adted upon by p, fhall have the fame velocity ge- 
nerated as was before generated in the point d of the 
body qj then by the common rule for non-elaftic bo- 
dies, the velocity of m after the ftroke will be —yp and 
hence 
Px v 
PxVxDC 
GC 
confequently m = Q_x — 
P+M CLxCG + PxDC’ 1 ” J *'* " DC' 
Cor. 7. If a given quantity of motion were commu- 
nicated to any point of the body q_, the progreffive 
motion of that body after the ftroke would be the fame. 
For fuppofethe magnitude of the body p to be diminifhed 
fine limit e y and its velocity to be increafed in the fame 
ratio, then, becaufe qJcS+^dc ( w ^i c h the velocity of 
p after the ftroke, if the bodies be non-elaftic) = (becaufe 
p is infinitely fmall) the velocity of p after the 
ftroke 
