Students roll steel ball and golf ball down ramp and calculate average velocity and momentum. They graph height Vs. Momentum. They then put a milk carton at the bottom of the ramp and measure how far it moves. Just like NYS lab test. Finally, they use their graph to determine the height that each ball needs to roll from to get the same momentum. They then test it to see if the milk carton moves the same distance. In other words, can they make the milk carton move the same distance by adjusting the height of the ramp for each ball. When I did this I had each team tell me the heights and I did it as a demo. Great for closure! 2 page lab. Lesson Universe Hot Links: Download your Workload! Individual Physical Science Units Six Complete Units: Scientific Skills, Matter & Chemistry, Motion, Forces & Simple Machines, Fluid Mechanics, and Energy Entire Physical Science Course Receive a complete course in Physical Science (all six units) over 150 files! Lesson Universe: The Store See all of our lessons including Astronomy, Earth Science, and more!