In Balloon Drop  your objective is to drop a water balloon from a window so that it hits a person walking below.   You should use the equations of motion to determine when to release the balloon based on its height above the target, the target's speed, and the target's starting point.  You should determine the time it takes for the balloon to fall from the window and the time it takes for the target to reach the drop point.  Based on these two times, you can determine when to drop the balloon.

As you play the game, notice how the balloon travels a greater distance each second due to the acceleration.  The target travels the same distance each second since he is not accelerating. If you hit the target, a print button will appear to let you print your results if you are using a desktop browser.