Hello everybody, It'd be very helpful if you could propose some ideas, suggestions to what we've already made. -------------------------- So, we had a test rig consisting of an inclined board, connected with floor using a curved steel plate. The model of a car, after gaining some acceleration, then hit a wall. On the front of the car we attached different materials such as: aluminum foil, cardboard, plastic (from disposable cups), gum (from toys), sponge. We were using an accelerometer (Vernier WDSS) to record plots of acceleration in time for different bumper materials. We've also made two short films using a high speed camera showing the details of collision. Besides we measured the mass of a car, the length of a car path, the angle of incline. From all this data we wanted to create plots of momentum in time (using LoggerPro) and discuss the "safety" of each of those materials for a potential passengers. I thought that we would obtain: (see attachments) Where the left plot would be obtained for not flexible materials, and the right one for flexible ones (better safety). -------------------------- However, integrate function from LoggerPro gives us only the value of velocity on a selected region, whereas I wanted to obtain a set of points every t period so that after multiplying it by the mass we would obtain momentum in time, as said before. What are your other ideas for the theoretical analysis of such an experiment? What could we present as well? Regarding of course the topic of elastic/inelastic collisions; safety; gravity overload.