ABSTRACT
Interlude A quick note: you might be wondering what the difference is between the symbol types in step 4 and why we chose “Graphic.” The symbol types will be explained in the closer look section later in this chapter. We won’t get into the Registration point until much later, but to satisfy any nagging curiosity, it’s basically the default pivot point. But now, let’s talk about the ball you just created. Take a look at it. How long do you think it will take to fall to the ground (bottom of the stage)? Whatever answer you just gave to that question has determined how large the ball is. We have drawn one ball of a certain size, and it is already a certain distance from our ground. How long it takes the ball to reach the ground tells us how big the ball is around. For instance, given the size I drew mine (which you can see in the provided *.fla file), if you said “1 second” then it’s about the size of a beach ball. If you said “0.5 second,” it would be a softball. “3 seconds?” The NYC Times Square New Year’s Ball with all the lights and expensiveness-you get the point. Timing affects a great deal in physics; you want to understand why so you can break the rules to the greatest effect.
