Tweak and test your ramp launcher with Ramp Lab. Adjust your ramp design with the handles, click on Run to test drive it, observe and tweak again. The Graphs and Ramps Interactive is a simulation in which learners build a ramp along which a ball will roll. The goal is to build the ramp with the correct heights and incline angles such that the roling ball moves with a motion that matches a provided position-time or velocity-time graph (the target graph).