...the cause of uniform motion. An addition to his definition of impressed force ratif1ed the change. "This force consists in the action only, and remains no longer in the body when the action is completed." With the alterations in the definitions and in Law i, Newton effectively embraced the principle...

...a given speed but Newton's changed the speed as long as it was applied. Definition IV. An impress'd force is an action exerted upon a body, in order to...maintains every new state it acquires, by its Vis Inertiae only.14 The fourth definition gave a historic new meaning to an old term, impressed force,...

...quite correct. The paragraph of explanation following this definition remarks first that impressed force "consists in the action only; and remains no longer in the body, when the action is over." Thus, whereas the "force of inactivity" is a permanent attribute of a body - not always exercised,...

...order to change its state, either of rest, or uniform motion in a right line. And the explanation: This force consists in the action only, and remains no longer in the body when the action is over. [...] But impressed forces are of different origins as from percussion, from pressure, from centripetal...

...pressione, ex vi centripeta. These passages are translated by Motte as below: — " Definition IV. An impressed force is an action exerted upon a body,...maintains every new state it acquires, by its vis inertia: only. Impressed forces are of different origins ; as from percussion, from pressure, from...

...in order to change its state, either of rest, or of moving uniformly forward in a right line.'1'' " This force consists in the action only, and remains...maintains every new state it acquires, by its vis inertice only. Impressed forces are of different origins ; as from percussion, from pressure, from...