The Projectile Motion Sprinkler is a great way of simultaneously shooting streams of water with the same velocity but at different angles. The Sprinkler shoots streams at 20, 30, 45, 60, and 70 degree angles. Note that the 45 degree stream goes the farthest. More importantly, notice that the 20 & 70 and 30 & 60 streams hit at the same spot (try doing that with a garden hose!). www.eckerd.edu/3d-Physics for more info.