This is quite a cool game that was fun to play! Although I did notice a few bugs and things that could be improved.
For one, the collision for the ball being counted as going through the hoop was a bit buggy. If the ball hit the outside of the rim in a certain way, it would still count and just bounce off, leaving to multiple balls being on screen, kinda like pinball multiball. I would assume this is because the collider of the ball was not set to continuous.
Two, as another commenter stated, changing a balls momentum from backwards to forwards took a while and was a bit annoying. Perhaps add a sloped bit on the front of the pad to encourage charging toward the ball for a more forward hit.
Finally, sometimes the balls would be launched in a way that made it impossible, or at least very difficult, to score. Like the pad would be on the far left and the ball would be launched toward the far right. Sometimes the ball would launch right into the net.
Overall though, this game was quite good. The mechanics felt solid (except for the things I talked about earlier of course). The visuals were nice, and so were the particles. It's a pretty good game for a game jam!