1. The problem statement, all variables and given/known data What are elastic and inelastic collisions? What is an explosion? 2. Relevant equations N/A 3. The attempt at a solution In elastic collisions, the colliding objects bounce off of each other to some degree, and kinetic energy is conserved. Inelastic collisions involve the transformation of some initial kinetic energy into other forms, such as heat or potential energy. Objects that collide in a completely inelastic way stick together. Explosions are a form of inelastic collisions, for kinetic energy is not conserved. How can I elaborate upon this? I'm still slightly confused about momentum in general, and I don't understand explosions whatsoever. My notes state that kinetic energy is conserved for explosions, but other online sources state the opposite. That's never a good thing.