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12 Of Simple Motion.

be as the Celerities, with which theymove. * .

LA W IX.

If C— c. S : s :: 7": t, that is, Ifthe Celerities are ‘ equal, the Spacespassed over by the moving Bodies,will Be directly as the Times ill whichshe Motions are made.

The Truth of these two Lawsis obvious to any one who can con-ceive, that if a Body moves withdouble, triple, &*c. the Celerity ofanother Body, it will, in an equalTime, pass over double, triple,the Space which that other Bodypasses overand if two Bodies moveequally swift,' is ‘one'continue morring double, or triple, &c. the Timethe other moves, it will pass over :double, or triple, &*c. the Spacewhich the other pall es over. * ,

. ■- ■ . LA IV