Students explain how safety belts prevent injury. They identify three other safety features in a vehicle. Students discuss how fast 40 miles per hour is. They discuss how high a five story building is. Students discuss other types...

Students conduct a hands-on experiment with collisions between two skateboards of different masses. They are introduced to the concept of conservation of momentum in collisions and consider how their observations might help engineers...

Students explain that mass times velocity equals momentum. They investigate the impacts of collisions and their results and determine the vector of an incident.