A couple takes on animating the traditional bouncing ball without any decay:

Resource Material

Rigs – I’m using this free rig from bloop animation for this exercise, as well as the tailed rig from Ultimate Rigs( there are also other great starter rigs there too, its worth a look)

https://www.bloopanimation.com/ball-rig/

http://www.cgmeetup.net/home/ultimate-rigs-maya-rigs-maya-character-rigs-free-maya-rigs/

Tutorials – a lovely tutorial that goes into an easy to understand description of the basics of animation physics.