Why do hard things still bounce when dropped?

Question

A ball bounces because it changes shape on impact and the momentum from changing the shape back to normal makes it go up again. Then why rock solid stuff also bounce when dropped? Ive seen pebbles bounce when dropped. My phone bounces like 1 or 2 times when i drop it. Why?

In: 2

Answer 1

There is no such thing as a true solid, look at slow motion videos of a “solid” object getting hit.