Editing Momentum (section)

==== John Wallis ====
In 1670, [[John Wallis]], in {{lang|la|Mechanica sive De Motu, Tractatus Geometricus}}, stated the law of conservation of momentum: "the initial state of the body, either of rest or of motion, will persist" and "If the force is greater than the resistance, motion will result".<ref>{{cite book |last=Scott |first=J. F. |title=The Mathematical Work of John Wallis, D.D., F.R.S. |date=1981 |publisher=Chelsea Publishing Company |isbn=978-0-8284-0314-6 |page=111}}</ref> Wallis used ''momentum'' for quantity of motion, and {{lang|la|vis}} for force.