press the green flag to Make the cat fall. Feel free to us it in your project as long as you give credit. Put a link into the comments to your project so i can see what you use this for. :-) There are notes in it to show you what each thing does.
If you see this pls like and fav so that other people can see it when they search up gravity engine and it can help them out. this is pretty simple though if your confused of which variable to use then just comment the problem you are having and i will reply as soon as i see it