Balloon Powered Car Physics STEM BTS17

Middle School Back to School Physics: 2-page STEM packet on Newton’s Third Law, axle friction reduction, pneumatic thrust, & average velocity math.

Put Newton’s Laws of Motion into high-speed action! The Balloon-Powered Car Challenge (BTS17) challenges middle school student teams to act as automotive engineers, building a rolling vehicle out of bottle caps, straws, index cards, and skewers that is propelled purely by balloon air thrust.

Students explore Newton’s Third Law of Motion (Action/Reaction), friction reduction, pneumatic thrust, chassis alignment, and average velocity math (v = d / t)!

What Is Included in This 2-Page Packet?

Page 1: Student Mission Card & Blueprint: Real-world automotive engineering and clean-energy propulsion scenario, clear material constraints box (1 balloon, 2 straws, 2 skewers, 4 bottle cap wheels, card base, tape, flat track testing), and a dedicated Chassis, Axle & Nozzle Propulsion Blueprint sketching zone for planning axle housings, thrust vectors, and wheel alignment.

Page 2: Testing Log & Scientific Reflection: Structured Data Testing Table (track chassis modifications, linear distance in centimeters, and drift offset across 3 trial runs), Applied Math Connection (calculate average vehicle velocity in centimeters per second using v = d / t), and physics reflection questions analyzing Newton’s Third Law action/reaction forces, rotational friction reduction, and mass vs. acceleration relationships (F = ma).

Core STEM Skills Covered:

Newton’s Laws of Motion (Action/Reaction & Force/Mass/Acceleration)

Automotive Engineering, Axle Mechanics & Friction Reduction

Data Logging, Metric Distance Measurements (cm), Time Tracking (s), and Velocity Math

Iterative Prototyping and Vehicle Alignment Tuning

Why Teachers Love This Resource:

Unbeatable Physics Demonstration: Makes abstract concepts like thrust and action/reaction forces immediately tangible!

Low-Cost Recycled Materials: Uses plastic bottle caps, straws, skewers, index cards, and balloons.

Clean 2-Page Layout: Keeps student schematics, velocity calculations, and physics reflections organized on a single front-and-back printable sheet.

Print-Ready: High-resolution, 2-page PDF format ready for instant printing.