Initial momentum=mv Final momentum=-mv Change in momentum=-2mv Change in momentum of molecule=2mv Share with your friends Share 0 Sakshi Kanwar answered this Dear Student In the next step we have considered only the magnitude so -2mvx changes to2mvxRegards 0 View Full Answer Naga Nandhini answered this I'm sorry, I understood it now. Sorry for posting! 1 Caitlin answered this Change in momentum = Final Momentum(-mvx) - Initial Momentum(mvx) Hence, Change in momentum = (-mvx-mvx) = -2mvx Cheers! 1
