Based on what you know about kinetic energy and momentum during an explosion, form a hypothesis about kinetic energy and momentum conservation during a perfectly inelastic collision. If this were a pe...Based on what you know about kinetic energy and momentum during an explosion, form a hypothesis about kinetic energy and momentum conservation during a perfectly inelastic collision. If this were a perfectly elastic collision then we should be able to calculate the final velocities using the elastic collision equations found at the very bottom of this web page.