It depends how you move your hand, of course, but 'easeInOutQuint' from Robert Penner's easing equations[1] is a fairly good approximation of a hand, finger, or

It depends how you move your hand, of course, but 'easeInOutQuint' from Robert Penner's easing equations[1] is a fairly good approximation of a hand, finger, or cursor moving quite quickly from one point to another in a straight line. The movement is almost linear, except for the rapid acceleration when you hand begins to move and the rapid deceleration as it slows to focus on a point. [1]: Example, with onion skinning: http://gizma.com/easing/ http://gizma.com/easing/ [requires Flash] (Check x and y under the "Qnt" column on the bottom row, then click anywhere in the box to move the ball.