Newton's 2nd law using a sensor cart

A sensor cart is used to obtain force and acceleration data as it is pulled up and down a level track.
1) In the first part of the video force and acceleration versus time data is shown synchronised with a video of the cart. The graph is then adjusted to display force versus acceleration.
2) In the last section of the video, the details of setting up data collection are shown (to assist students/teachers conducting the experiment themselves).