The alternation of motion is ever proportional to the motive force impressed; and is made in the direction of the right line in which that force is impressed.
Laws of Motion, II - Philosophiae Naturalis Principia Mathematica (1687)
The alternation of motion is ever proportional to the motive force impressed; and is made in the direction of the right line in which that force is impressed.
Laws of Motion, II - Philosophiae Naturalis Principia Mathematica (1687)