Animation: specify speed, not time
<p>I have a draggable element <code>$myElement</code> with <code>revert: true</code>. Now specifying <code>revertDuration</code> will determine the time the reverting animation will take to complete.</p>

<p>My problem is that the speed of the animation will vary greatly depending on how far <code>$myElement</code> is dropped from the original location.</p>

<p>Is there a way of specifying the <em>speed</em> of the animation (as opposed to the <em>total time</em>)?</p>
