Answers:
Part One: Elastic Potential Energy
Part Two: Potential energy converted to kinetic energy when the ball started moving down the ramp.
Step-by-step explanation:
Part One: The ball is not moving, therefore there is no Kinetic energy. The ball does not involve chemicals, so there is no Chemical Energy. By the process of elimination, you'll gather that there is potential energy to be had.
Part Two: Remember when we talked about the ball being still, and not moving? Well here's where it does. The potential energy has now turned into kinetic energy as it begins to roll down the ramp. The steeper the ramp the faster the kinetic energy will build.
I hope this helps!