Slow In and Slow Out

Spongebob Squarepants - Patrick Sitting Down

This clip from Spongebob illustrates how the humanoid form (Patrick) accelerates, then decelerates to perform the action of sitting down. This action is composed between two key frames, 'slowing in' as Patrick bends to sit down, mentaining speed as he falls back, and 'slowing out' as he sits down. 

Mickey Mouse - The Opera House

Another example of 'slow in and out' is depicted above (02:25): Mickey is seen jumping up and down on the piano, as if on a trampoline. This again switches between two key poses, slowing in and out of those positions. 

Written By Robert Markland