ass. {{cite book}}: Unknown parameter |coauthors= ignored (|author= suggested) (help) [Emphasis as in the original]↑ Kleppner, Daniel (1973). An Introduction to Mechanics. McGraw-Hill. pp. 133–134. ISBN 0070350485. Recall that F = dP/dt  was established for a system composed of a certain set of particles[. ... I]t is essential to deal with the same set of particles throughout the time interval[. ...] Consequently, the mass of the system can not change during the time of interest. {{cite book}}: Unknown parameter |coauthors= ignored (|author= suggested) (help)↑ Hannah, J, Hillier, M J, Applied Mechanics, p221, Pitman Paperbacks, 1971↑ Raymond A. Serway, Jerry S. Faughn (2006). College Physics. Pacific Grove CA: Thompson-Brooks/Cole. p. 161. ISBN 0534997244.↑ C Hellingman (1992). "Newton's third law revisited". Phys. Educ. 27 (2): 112–115. Bibcode:1992PhyEd..27..112H. doi:10.1088/0031-9120/27/2/011.↑ Newton, Principia, Corollary III to the laws of motionමෙම ලිපිය වාර්තා 