Curve Fitting Data: Motion Analysis, Bouncing Ball, Excel Graph

[jey1234]

Homework Statement

This is not homework, just a personal project. I do not know if this is the correct section to post, sorry if it's not. I'm using a motion analysis software to track the position of a bouncing ball (y vs t). I imported the data into Excel and the graph is attached. What type of function is this? Does it involve the geometric series? I'm trying fit the data using http://zunzun.com/. Which function should I choose? Thank you.

Homework Equations

The Attempt at a Solution

 

[tal444]

I believe this would be an infinite geometric series.