This investigation may be just the introduction you need to two-dimensional motion. In a twist on the classic “monkey and hunter” demonstration, you can move the rifle around and vary the muzzle velocity in your quest to miss the monkey. (Don’t worry. We at GigaPhysics like monkeys, and we use only a harmless foam dart in this demonstration.) After firing, follow the path of the dart and take a few measurements with the on-screen ruler to see the key concepts.