Use the mouse for moving the bar. If the bouncing physics is not right, it's because it's based on DX Ball. There is no fun in realistic bounce physics because it will always go the same way and technically you wouldn't 'control' the ball.
Happy Star Wars Day and May the Force be with You. Coded by me. I just realized that the theme is Glow in the Dark and it's Star Wars Day; I could make something related to Lightsabers. This is for Scratch Week Day 1. Scratch Week Day 2: Minefield https://scratch.mit.edu/projects/1315202515 Scratch Week Day 3: How to go through walls https://scratch.mit.edu/projects/1315644271 Scratch Week Day 4: https://scratch.mit.edu/projects/1315225079