This week, my students and I completed a unit on newton’s laws, momentum and car safety. The ultimate goal of the units was to have students design and build

at least 3 safety features for a passenger (an egg) in a model car (lab cart), test it (hopefully surviving the crash), and then use their understanding of physics to explain how each feature intended to increase safety and reduce harm, and perform calculations that provide further evidence of their claims.

The unit began with a simple question:

“What do you think would be most harmful to a person’s body, a rear end […]