Jumping Over Ball GIF

I did this by first importing the jump sequence into Flash, I then inserted a blank keyframe on every frame by clicking on 'ctrl' and a box will appear where I clicked 'Insert blank keyframe'. After this I dragged each stage of the jumping onto each keyframe.

To have the ball added I made a new layer from the layer button on the left bottom of the box. On the first frame I made a ball and added out of the white paper box. Finally clicking 'ctrl' on the last frame, I clicked 'motion tween' and dragged the ball to the other side of the white box. Flash will automatically do the movement for you. There I have my GIF!