a moving system undergoes an explosion. what is correct for the momentum of the system and the kinetic…
a moving system undergoes an explosion. what is correct for the momentum of the system and the kinetic energy of the system when they are compared immediately before and after the explosion?\n| momentum | kinetic energy |\n|--|--| \n| conserved | increased |\n| conserved | conserved |\n| increased | conserved |\n| increased | increased |
Answer
Explanation:
Step1: Recall momentum - conservation principle
In an explosion, there is no external force acting on the system in the absence of non - conservative external forces. According to the law of conservation of momentum, the total momentum of an isolated system remains constant. So, the momentum of the system before and after the explosion is conserved.
Step2: Analyze kinetic - energy change
During an explosion, internal chemical or other forms of energy are converted into kinetic energy of the fragments. So, the total kinetic energy of the system increases.
Answer:
A. conserved, increased