Use the "left arrow" and "right arrow" keys to move the cat sprite left or right. Press the "M" key to move the magnet right. Press the "Z" key to move the magnet left. Press the green flag to reset the sprites to restart.
Sprite going right off the edge of the cliff will display the effect of GRAVITY. Sprite moving right against the beachball shows the PUSH effect. Sprite moving left will display the PULL effect. Moving the magnet towards the nails will eventually display MAGNETIC FORCE.