Click on the green flag to activate the canon. Then press on the green flag or the space bar to make the cannonball fire. You can adjust the initial x-speed and y-speed of the ball (with sliders or arrow keys), and the force of gravity.
This is a variant of cannonball simulation found here: https://scratch.mit.edu/projects/24908285 In that version, you control the angle and initial velocity of the ball.
