I loko o kahi kuʻi ʻana hapa elastic (kuʻi ʻana imperfectly elastic), pili ke kānāwai o ka mālama ʻana i ka momentum , ʻoiai ʻaʻole pili ke kānāwai o ka mālama ʻana i ka ikehu kinetic. I ka wā o ke kuʻi ʻana, ua hoʻololi ʻia kekahi o ka ikehu kinetic i ikehu kani, ikehu wela, a me ka ikehu kūloko. ʻO ka hoʻohana ʻana i ka huaʻōlelo elastic e hōʻike ana ma hope o ke kuʻi ʻana, ʻaʻole e hui pū nā mea ʻelua i hoʻokahi a i ʻole e pili pū, akā e lele. ʻO kahi laʻana o kahi kuʻi ʻana imperfectly elastic he kuʻi hoʻokahi-dimensional ma waena o ʻelua mau kinikini a i ʻole ʻelua mau pōpō billiard.
Laʻana pilikia.
1. Neʻe nā mea A a me B, me ke kaumaha o 1 kg a me 2 kg, i nā ʻaoʻao ʻē aʻe ma ka wikiwiki o 4 m/s a me 2 m/s, a kuʻi ma ke ʻano elastic kīnā ʻole. Inā ma hope o ke kuʻi ʻana, neʻe ka mea A ma ka wikiwiki o 2 m/s, he aha ka wikiwiki o ka mea B?
Pahana
Ua ʻike ʻia :
mA = 1 kg, mB = 2 kg, vA = 4 m/s (e.g. ma ka ʻākau), vB = -2 m/s (e.g. ma ka hema), vA' = -2 m/s
Ua nīnau ʻia : ilokoB'
Pane :
Ma hope o ke kuʻi ʻana, neʻe ka mea B ma ka wikiwiki o 1 m/s (no ka laʻana i ka ʻākau) a neʻe ka mea A ma ka wikiwiki o 2 m/s (no ka laʻana i ka hema).
