21C. Teachers of Science

뉴턴의 운동법칙은 다음과 같다. Law I: Every body persists in its state of being at rest or of moving uniformly straight forward, except insofar as it is compelled to change its state by force impressed.[28] 뉴턴이 본인의 저서 프린키피아에 서술한 내용은 우리가 현재 교과서에서 배우는 내용과 다르다. Law II: The alteration of motion is ever proportional to the motive force impress'd; and is made in the direction of the right line in which that force ..