Back to School STEM Activity: Rubber Band Car Challenge (BTS19) | Physics

🏎️ Back to School STEM Activity: Rubber Band Car Challenge (BTS19) Master mechanical powertrains, elastic potential energy, and rotational torque! The Rubber Band Car Challenge (BTS19) challenges middle school student teams to act as automotive powertrain engineers, designing a rolling vehicle driven by a wound rubber band mechanism attached to a wheel axle. Students explore elastic potential energy to rotational kinetic energy conversion, axle torque, wheel friction and traction, and distance-per-wind math ratios! 📦 What is Included in This 2-Page Packet: Page 1: Student Mission Card & Blueprint: Real-world mechanical powertrain and alternative energy storage scenario. Clear material constraints box (2 rubber bands, 2 skewers, 4 wheels, 2 straws, cardboard chassis, paperclip, tape, distance goal). Dedicated Powertrain Drive & Axle Schematic sketching zone for planning chassis hooks, rubber band wind loops, axle housings, and traction surfaces. Page 2: Testing Log & Scientific Reflection: Structured Data Testing Table: Track axle rotations (winds), distance traveled in centimeters, and failure points across 3 trial runs. Applied Math Connection: Calculate distance-per-wind efficiency ratios (Distance Traveled / Number of Winds) in cm/wind. Physics Reflection Questions: Analyze elastic-to-kinetic energy transformations, wheel traction vs slippage, and coasting friction reduction. 📐 Core STEM Skills Covered: Elastic Potential Energy, Rotational Torque & Kinetic Energy Automotive Powertrain Engineering, Friction & Traction Management Data Logging, Distance Measurements (cm), and Wind Ratio Math Iterative Mechanical Tuning and Vehicle Performance Optimization 💡 Why Teachers Love This Resource: Classic Mechanical Engineering Lab: Gives students direct, hands-on experience with mechanical gearing and energy transfer! Low-Cost Recycled Materials: Uses plastic bottle caps or CDs, skewers, straws, rubber bands, and cardboard. Clean 2-Page Layout: Keeps student schematics, efficiency math, and physics reflections organized on a single front-and-back printable sheet. Format: High-resolution, print-ready PDF format (2 Pages).