Students measure the time it takes for various objects to travel 40 m. I suggest rolling a basketball, someone walking, someone jogging, two people piggy-back, or someone riding a bicycle. Students stand with stop watches every 10 m to records the data points. There is a graph sheet include to compliment the data. I have added a flat line at 20 m for example F, I have also clearly labelled the examples A, B, C, D, E and F for those having trouble following which example was which. I have added a revised answer sheet so you can match the examples with their solutions