Click to launch a hippo and see his parabolic trajectory. Then remix this into a cool game! It is not yet a cool game.
I referenced these notes on parabolic trajectory. I used the equations for horizontal and vertical velocity. https://www.boundless.com/physics/textbooks/boundless-physics-textbook/two-dimensional-kinematics-3/projectile-motion-42/basic-equations-and-parabolic-path-226-10952/ Thanks to Incompetech for the music! Hippo and Circles background and "Water Drop" noise from Scratch library. Cannon art by me.