Acceleration is the key to everything. Without it, we would have never gone into space, or we wouldn't, if you really think about it, fall. But most important we would never have speeding tickets, because we can't accelerate to get to that speed. In my pixton, an alien accidentally comes to earth and doesn't really know what acceleration or velocity is. A girl shows him what it is before he leaves.
(I could not get this photo to load with very good quality or color, sorry)