Students investigate how force, time, mass, and velocity shape collisions through a launch lab in which they crash dynamics carts, measure outcomes, and use the results to explain impulse, momentum, and safer driving decisions at the school entrance. They analyze crash scenarios, collect and model data, and apply conservation of momentum and Newton’s laws to design a before-and-after entrance safety proposal with visual maps, physics-based recommendations, and student-made warning messages for the school community. Through critique, gallery-walk feedback from classmates and community partners, and short voice reflections after experiments and model revisions, students strengthen communication, collaboration, and problem solving while connecting physics to teen driving safety.

Students will investigate collisions with dynamics carts to determine how force, time, mass, and velocity affect impulse and changes in momentum, then use equations, graphs, and system representations to explain when total linear momentum is conserved and how net force, mass, and acceleration are related. They will analyze lab results, crash-test evidence, and school traffic data to predict collision outcomes and refine designs for simple impact-reduction devices or school entrance safety features that reduce force by increasing time of impact. Students will collaborate to develop and revise a school entrance safety proposal with visual maps, warnings, and physics-based recommendations for teen drivers, informed by feedback from peers, facilities staff, the safety committee, and community experts. They will communicate their reasoning through gallery walk artifacts, public exhibition materials near the entrance or parking lots, and short voice reflections that document how their predictions changed, how they handled setbacks or disagreements, and what they learned about safer driving.

Students will create cart-collision lab data displays, momentum and impulse model sets, annotated collision diagrams, and short voice reflections that capture how their predictions, revisions, and team decisions changed over time as they investigate force, time, mass, and velocity. As they study the school entrance, teams will produce traffic-flow maps, before-and-after safety sketches, and draft warning messages grounded in calculations and evidence from collisions and momentum conservation. The culminating product is a school entrance safety proposal that includes visual maps, physics-based recommendations, and student-made warning signs or infographics for display near the entrance or parking lots. For the exhibition, teams will also prepare a gallery-walk presentation board or digital slide set that explains their evidence, revised models, and design choices to classmates, facilities staff, the safety committee, and other community members.

Launch with a hands-on collision lab in which teams crash two dynamics carts while varying mass and velocity and using sensors or video analysis to measure force and collision time. Students make predictions before each trial, analyze how changes in force, time, impulse, and momentum affect the outcome, and compare elastic and inelastic collisions to connect the lab to real teen driving situations at the school entrance. After the lab, have teams annotate a school entrance map with initial safety concerns and questions, then hear brief input from facilities staff, the safety committee, law enforcement, or a collision repair professional about actual traffic or low-speed crash issues near campus. Close with a short voice reflection in which students explain how their predictions matched the data and how they handled setbacks, uncertainty, or disagreement during the investigation.

Host a school entrance safety showcase near the main entrance or parking lot where teams present their before-and-after safety proposals with visual maps, collision diagrams, momentum calculations, and student-made warning signs for teen drivers. Structure it as a gallery walk so classmates, families, facilities staff, the safety committee, local law enforcement, and a collision repair professional can leave feedback on how clearly each team used evidence from cart-collision investigations and force, impulse, and momentum analysis to justify safer traffic flow recommendations. Include short student-led demonstrations or digital explainers that connect the dynamics cart crash lab to real school entrance scenarios, plus QR codes linking to voice reflections about how predictions changed after experiments and how teams handled setbacks or disagreements. End by selecting feasible recommendations to display near the entrance as a public-facing safety campaign for the school community.