Chapter 9 Linear Momentum and 2 Newton second law of motion in terms of momentum ip dt m is a constant, Sof= dp d(my) dt dt F d For a particle net net,sChapter 9 Linear Momentum and Collisions 2 Newton second law of motion in terms of momentum m is a constant， so： dt dP Fnet   = Fnet = ma  For a particle t p F d d   = ma t m t p F     = = = d d( d d v)