Why doesn't a dropped object bounce back to its release height?

[Toliver96]

Why is it that when you drop something on a spring, that item dropped on the spring does not bounce back up to where you dropped it from?

 

[russ_watters]

Springs are not perfectly elastic, so some energy is "lost". Can you guess where it might go?

 

[Toliver96]

Would it turn into heat and sound energy?

 

[Drakkith]

Would it turn into heat and sound energy?

Yep!