Here’s mine. I re-draw the ball in most of the frames so it’s spaced evenly between frames, then changed the frame timings. Think I prefer the first method. 
Looks smoother with speed variation: 
This is my one with parameters applied:
Quite time consuming to tweak…
my animated gif
Recreated my ball animation from last lecture. Speed is increased as it drops and decreased as it ascends.
Had to recreate the ball because I was playing with backgrounds last time.
Those layer parameters are good to mess around with. Anyways, here’s my per-frame altered animation:
I did mine in reverse. Slow fall, fast rise.
My go at it:
Here is my bouncing ball varied
Animation Parameter Challenge
Here’s is my bouncing ball with varied speed:
Unspecified delay 
not very dynamic.
specified delay 
a little more dynamic… maybe needs some adjusting.