A starter kit for learning to work with velocity variables: Add your own code to... 1) let the cat jump up (add y velocity once while on the ground); and 2) account for gravity (subtract velocity for each moment the cat is in the air).
Ice rink image is taken from here: https://commons.wikimedia.org/wiki/File:Outdoor_ice_rink_in_It%C3%A4kyl%C3%A4_20170306.jpg