Saya mau tau Elastic collisions dari Moméntum. Jelaskan dalam bahasa sunda

A collision between two Pool balls is a good example of an almost totally elastic collision; a totally elastic collision exists only in théory. In addition to momentum being conserved when the two balls collide, the sum of kinetic energy before a collision must equal the sum of kinetic energy after:

Since the 1/2 factor is common to all the terms, it can be taken out right away.