That the speed of light is a constant value has some interesting implications. One implication is that no ordinary object can actually reach the speed of light, let alone travel faster than that. There are other unusual things that happen to objects traveling close to the speed of light. Time is dilated and object lengths shortened. Advanced students may want to explore this question.
All teachers have unique and original ways to introduce new topics and ideas.
Presented here are a couple of ideas for introducing this lab activity. One way this activity can be used is as an example of limits to scientific laws. Tell the students that the computer activity they will be conducting looks for the limits to Newtonian mechanics. With more advanced students this activity is a good introduction to special relativity. For this group, lead a discussion about laws and theories as before.