Any maths fans out there? Relative to the ground, how fast are the cars travelling when they are at the furtherest point from the centre axle and how fast are they travelling at the closest point to the centre axle? Observe the video. The cars appear to be almost stationary as they are flung out to the furtherest point and then they are pulled back in and appear to be at their fastest as they pass the centre axle. https://youtu.be/nCeh94aC0r0