You may also be able to do this without physics.
Add Bullet behavior to your ball, set Bounce off solids=yes, Set angle=No, Gravity=10, speed=100. (experiment with these values)
Add Solid behavior to the floor.
Create an event to increase bullet gravity every time the ball collides with the floor:
On Ball collision with Floor -> Ball set Bullet gravity to Ball.Bullet.Gravity*2
This will make the ball to jump lower every time.
You can control the ball by changing its bullet properties - speed, angle of motion, gravity.