# Collision of undivisible particles

1. Aug 15, 2013

Is it is true that all elastic collision are like rubber balls, then how does indivisible particles collide if they can't change their shape, that is store the energy inside like rubber balls and then release it?

2. Aug 15, 2013

### Khashishi

Elastic collisions are collisions that conserve kinetic energy, not collisions that act like rubber balls. It sounds like you are taking some metaphor way too literally. Since energy is conserved, all collisions are elastic unless something changes in the particles/objects during the collision.

3. Aug 17, 2013

### bgq

Their shapes change but returns as springs.

4. Aug 21, 2013