Path of action, and arcs

Ok today we are going to talk about path of action, it is exactly what it sounds like, it is the path in which or charter, or objects travel in your scene. Everything in your scene is going to have one, and when i say everything i mean everything, well,  at least everything that is going to be moving. There are even paths of action within the characters paths of action. Every limb, the head and fingers all have paths of action, you want to make sure that you remember this, so your animation will look freakin amazing. Anyways, what exactly is it, well here is an example.

Aw yes the good old bouncing ball, this thing can realate to so many principles of animation but only some, anyways, as the ball goes down to hit the floor it needs to travel in a path of action wether its going fast or slow it will always have a path of action, but with less frames.  Also, take in those beautiful arcs that it is creating, you can see it more on the second bounce, but just look at it, when you have something travel from one point to another, it will always have an arc with it, no matter wether its going fast or slow, if it is going fast it will have a longer more stretched out arc but if it is going slower it will have an arc that comes close together. The same the applies with the hands, no matter what it is doing, it will always have an arc. ANYTHING THAT IS MOVING IN YOUR SCENE WILL HAVE AN ARC OF SOME KIND.

Like I have spelled out in the above caption, this example is crap, i drew it because no one was that rediculous to draw it on the net, but anyways do you see any good arcs in here, NO. Look at the path of action, exactly, you cant find one, if you put this up on the screen and showed your director, he would look at you and laugh in your face and tell you to come back when you know how to draw. If this is to hard at first to draw a perfect arc or get your path of action correct, just draw out the path of action with a pretty arc and then draw your character over the top, you can always trace and erase, there is nothing wrong with that.
Remember everything is going to have an arc of some kind wether its a crum falling to the floor, or a hand going to catch a ball, they all have arcs, and when you put them in your scene, the audiences eyes will sparkle because they are so amazed.