Ke kānāwai o ka mālama ʻana i ka momentum linear ʻōlelo ʻia inā ʻaʻohe ikaika o waho e hana ana ma luna o ʻelua mau mea e kuʻi ana a laila Manawale'a ua like ka momentum o ka mea ma mua o ke kuʻi ʻana me ka momentum o ka mea ma hope o ke kuʻi ʻana.
ʻIkepili:
m1 = ka nuipa o ka mea 1, m2 = ka nuipa o ka mea 2
v1 = ka wikiwiki o ka mea 1 ma mua o ke kuʻi ʻana, v2 = ka wikiwiki o ka mea 2 ma mua o ke kuʻi ʻana
v1' = ka wikiwiki o ka mea 1 ma hope o ke kuʻi ʻana, v2' = ka wikiwiki o ka mea 2 ma hope o ke kuʻi ʻana
v' = ka wikiwiki o nā mea ʻelua ma hope o ke kuʻi ʻana
He hōʻailona maikaʻi ko v a i ʻole v' inā neʻe ka mea i ka ʻākau a he hōʻailona maikaʻi ʻole inā neʻe ka mea i ka hema. Inā ʻaʻole ʻike ʻia ke kuhikuhi o ka neʻe ʻana o ka mea, akā e neʻe ana nā mea ʻelua i nā ʻaoʻao ʻē aʻe, a laila he hōʻailona maikaʻi ko v a me v' o kekahi mea a he hōʻailona maikaʻi ʻole ko kekahi mea. Inā neʻe nā mea ʻelua i ke kuhikuhi like, a laila he hōʻailona like ko v a me v' o nā mea ʻelua. Hōʻike nā hōʻailona maikaʻi a maikaʻi ʻole paha i ke kuhikuhi o ka neʻe ʻana o kahi mea.
