Adjusting the Ease
To add ease in and ease out on your motion paths, you can display the function curve and modify the Bezier or Ease curve. To apply an ease to multiple functions and keyframes, you can use the Set Ease For Multiple Parameters script and set the amount desired.
The Velocity, or ease, is used on motion keyframes. The Velocity has to be adjusted directly on the function curve in either the Function view or the Function editor. When a keyframe is selected, easing values appear in the right handle and left handle fields, as well as Bezier handle or Ease wheel controls on each selected keyframe. Pull on them to adjust the ease in and ease out, or type values in the fields.