Doubts and Amendments to Newton’s Third Law

牛顿第三定律的疑惑与修正 

Paper published in International Journal of Physics and Astronomy, Volume 9(issue 2), pp. 1-4, Dec 2021
DOI: 10.15640/ijpa.v9n2a1     

download

首发乃中文版于论坛：

https://c.cari.com.my/forum.php?mod=viewthread&tid=4236405
(出处: 佳礼资讯网)

Abstract
This article first raises the doubts that scholars have about Newton’s third law, particularly pointed out　Newton did not clarify the perspectives of “action” and “reaction” in the third law; do these two words　really mean “force” and whether the object in “action” or “reaction” will move. The main purpose of this　article is to rectify the third law, and then apply the rectified third law to explain three common cases in
physics with the help of free body diagram.