Make ball go up further

Hey so I have a character thats a ball and also a curve that I would like the user to press a button and for it to accelerate down that curve and then back up but when I get to the bottom of that curve, no matter how much acceleration, the ball just stops as it’s the character not letting the ball climb walls. Does anyone know how I can fix this so my ball smoothly goes down and back up the curve, thank you.
Ball accelerates down curve then just stops at the second arrow, and now is stuck at the bottom of the curve and won’t get past these two arrows:

Any help is much appreciated :slight_smile: