Оберіть закон наслідком якого є закон збереження імпульсу

Which of the following represents an upside-down image? o a. +doo b. -doo c. +mo d.-m

Positrons are spontaneously emitted from the nuclei of

Consider a system to be two train cars traveling toward each other. what is the total momentum of the system before the train cars collide?   kg • what must the total momentum of the system be after the train cars collide?   kg •