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The velocity of motion is estimated by the Divisibility renders a body capable of being At the k nee where the motion is backwards I t ime e !nploy ed III moving ove . r a certai . n S 1:' ace I ' �ivided, either by a � tual . separat � o � ? f its . par and forwards in the same plane, there is a or by the space moved over III a certaIll tIme. hcles, or by some ImagInary diVidIng hme hinge, mortice and tenon jomt, more accurately I The less the time and the greater the space Dr. Keill hasdoi:10.1038/scientificamerican02121848-163d fatcat:fyks22nkarcnpnvbbbf5qydxdu