Easy Ease = starts off slow and picks up speed.
Select keyframes then go to animation > keyframe assistant > easy ease.
The 'Graph Editor' above shows that the higher the line the faster an object with travel. This can be manipulated to change the speed and distance an object can move by moving the yellow points representing the two keyframes.
Easy ease example.
Easy Ease In = starts off fast and slows down.
Select keyframes then go to animation > keyframe assistant > easy ease in.
The 'Graph Editor' above shows that the object started off travelling at a fast speed and gradually slowed down.
Easy ease in example.