A simple program to illustrate how gravity influences a "jump." Scratch is given an initial speed (actually a velocity with direction 0). How high Scratch jumps is dependent upon the relationship between the start speed and gravity. Press the flag to clear the speed and set up the start speed and gravity. Click the cat to see the relationship. There IS a bug. When the cat hits the ceiling it stays there.... messing up the calculation of the returning speed. I don't get this. Help!
