Learn how to create a bouncing ball in Flash CS4

Lets draw a  ball on top of the stage, we are basically trying to bounce the ball on stage, so we need to know the ground level or the bottom, you can use rulers by chosing from the view menu bar and activating the rulers, now mark your bottom level where the ball should bounce down. So lets jump up to frame 12 and press F6 to add a new key frame and holding on to shift (so that it stays in the same line) drag the ball down to the markings. Create a classic tween in between frame 1 and frame 12, now try running the movie clip, you will see the ball going up and down on your screen. Now we are going to take the ball up, not as high as we started with, so go to frame 21, hit F6 and pressing on to shift key drag the ball up, a little below from where you started in frame 1. Again  to up to frame 29 press F6 and drag the ball to the ground level, again go to frame 35 press F6 and drag the ball slightly higher from ground level, then go to frame 39 and end the ball on the ground level, now go between frames, right click and insert a classic tween.

When you test your movie clip you have a bouncing ball.