Example of Bad Timing in Animation

The main reason why the timing is bad is because it seems like the ball is pretty heavy since it falls fast. But after it hits the floor it starts bouncing which makes it looks unrealistic. Also, the bouncing intervals are with different timing and spacing.

If I had to improve this animation, I would change the timing of the fall, making it slightly slower because I think that the creator wanted the ball to be light. Another thing I would change is the timing of the bounces, which would make the ball look more realistic.