Problem 1: Ignorant Anti-Gravity An object at rest tends to stay at rest... It is pretty common in cartoons such as the Looney Tunes for characters to run off a cliff and not fall until they realize they are no longer on solid ground. Compare what happens to cartoon characters to what would happen in real life _ in the same situation. Use proper freebzody u diagram _ - ' Background Image by Sarah Anne Edwards / CC BY SA 2.0 Horse image by openclipart / Public Domain Problem 2: Ignorance of Wall An object in motion tends to stay in motion... Bluff Mountain Tunnel Another common occurrence in cartoons is for a character to be able to run right through a rock face just because it has a tunnel painted on it. Again use what you know of physics to compare the fate of you would find in the situation in reality to what would happen in real life