Does anyone know how to get the same physics based movement from getting over it?

Does anyone know how to get the same physics based movement from getting over it? just kinda curious.

Here is a simple example:

dropbox.com/s/7zieahc38alave8/GetOverIt.c3p

Here is a simple example:

https://www.dropbox.com/s/7zieahc38alave8/GetOverIt.c3p?dl=0

So I was testing and seeing if I can use mouse controls, so far what I think is I'm going to have to have to program my own physics. If you have any thoughts, then they would be helpful.