Of Simple Motion . 15

LAW XIII.

t'tciiixS'T x s r tli 3 t iSy Thetio of the Celerities is compoundedof the direct: Ratio of the Spacespassed over, atid the reciprocal Ratioof the Times. For* by the last E-*cjuation,' 7~ xCx$ = t%CxS , which,gives C: c :: t x S ; 7x n 6KE.D*

I AW XIV.

L: Tit that is, The Ratio of

u C

the Times is compounded of thedirect: Ratio of the Spaces pastedover, apply’d to, or divided by theCelerities.

By the i oth. Law , T*C:tx c:: S: s,and. dividing the ist. and zd. by C fand the id. and 4 th. by c, you have

T: t ;: -A- E"

SCHQ-