The ball works like a Sprite except you can use the center coordinates of the ball. When you use a sprite, the app 'thinks' the coordinates of the sprite is the coordinates of the top left corner. You need to consider that when programming sprite behavior. You can compensate for the fact you don't have use of the sprite's center unless you provide code to shift the left corner by realizing its center is 1/2 the width of the sprite and 1/2 the height .
There probably are several ways to make a sprite 'jump'.
To make the sprite go up and down you can use the ball.MoveTo a point yNow to yNow-number of pixels you want to jump. x can stay the same or be used to move the jumper to the right or left by adding or subtracting the number of pixels to move laterally. You might also use a Clock to cycle the action.
To get the effect you want you will need to experiment. Your idea might work. Why not try it? 