Hi,
I have a "viewSlider" sample that does swiping ( mouse and touch ), I could not find it again on the forum, but I have attached it here.
This is modified a bit to take in account the speed when animating the view after your swipe release.
that's going to be the best starting point for you to experiment and get the behavior you expect.
I would however also encourage that you seek an asset that does just that, cause the math involved in doing the animation based on the swipe speed is rather complex, I haven't looked properly at existing code, but if you find a solution that does exactly what you are after, I'll port it to PlayMaker for sure, just pm me or reference it here.
note also that this sample is showing a 3d point of view, but to get it flatten out, simply set up your camera to be flat and ortho and you are good to go for all your 2d UI needs.
Bye,
Jean