Answer:
For the first one I think that depending on how high up you put the skater effects how fast/the velocity is.
For B I don't know
And for C I think that it depends on where you were to put it, if you put it somewhere down low, then it's energy would be really low compared to if you were to put the skater on a high ramp, the gravity pulling down on it would give it a greater force
Sorry I wasn't too helpful with it, did my best!:) And sorry if it's too late to use these for you
Explanation:
For A if you put the skater way up high when it came down all the gravity pulling down on the skater would cause it's/ there velocity to become greater because of the force pushing down on it (AKA Kinetic Energy)
