I'm writing these in retrospect for now, but here is what I got done on day 3!
I fixed some physics between the ball and paddle (I have Joe to thank for the help!), where the ball's trajectory would always be a set angle. Now, the ball's path can change angles relative position on contact with the paddle. I also added some variance to angles when interacting with trees (which are equivalent to bumpers).
I also added the start and game over screens, lives, points for breaking rocks, and collisions animations for the trees.
(The game should run a little smoother than the gif)