This was our kinetic energy lab. We did two different activities. The first was using a matchbox car and putting different size washers on it to change the mass. They used a track to put the car on and then measured how far the car was able to push the paper tray.
We also did different size marbles going down a meter stick ramp. (2 meter sticks connected with popsicle sticks)
They made tables in their science notebooks to keep all their data.