Arrow keys to move. It's an okay simulation, but not super good. Use the sliders to change the variables. The 1 and 2 keys make the gravity go up and down by increments of 0.01 Now Mobile-Friendly!!!!!!! See mobile-friendly version at https://scratch.mit.edu/projects/456102150/
Original, but Ideas gained from the book, "Coding Games in Scratch," By, "Scholastic." My first Gravity Simulation was really bad, but this one is much better. I hope you enjoy it.