# Collision and shattering

If a light body moving at some speed $$v$$, collides with a heavy body at rest and shatters on impact, then what type of collision is this? Since the light object breaks into pieces, there must be loss of energy in the form of sound or something, so it can't be an elastic collision. So, is it inelastic or completely inelastic?

Also, will this be any different if the object doesn't break completely, say only the tip of the pencil is broken?

• The collision is inelastic (kinetic energy of the system is reduced) as I do not known what is meant by completely inelastic. The tip of the pencil breaking as the result of a "collision" is inelastic. Apr 28 at 12:27