Two carts of unequal mass are sent into a collision. The velocities of each cart, both before and after the collision, are found so that the total momentum before and after the collision can be determined and compared.

In the video the lab is performed followed by the data being presented on a graph, which students use to complete a lab sheet. When the graph is displayed, all the data needed to complete the sheet is presented both visually and verbally, including the values and units needed for calculations. What the information represents is also explained to the student.