Perfectly Inelastic Collisions and Energy Loss
A 3D simulation of two lab carts on a frictionless track: Cart A moves toward stationary Cart B, they lock together on impact via Velcro pads, and continue as one mass at reduced speed. Overlays track total momentum, which stays constant, alongside total kinetic energy, which visibly drops. The animation clarifies that momentum conservation always holds while kinetic energy converts to heat, sound, and deformation, useful for introductory mechanics students studying collision types.
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The prompt that made it
Scene 1: The Lab Cart Collision (Hook & Opening Question)Visual Prompt: 3D physics animation of two laboratory carts on a smooth horizontal track. Cart A ($m_A$) moves right at speed $v$, hitting stationary Cart B ($m_B$). Velcro pads on their ends lock together upon impact with a visible spark/shockwave effect. They move together at a slower combined velocity $v'$. A glowing overlay displays total momentum conserved while total kinetic energy decreases. Text / Voiceover: "When two carts collide and stick together, why does their total speed drop, and where does the missing kinetic energy go? Momentum is fully conserved, but kinetic energy transforms into other energy forms!"
Make the next one in this series
- Show an elastic collision between the same two carts and compare momentum and energy graphs side by side.
- Animate a collision at an angle to demonstrate conservation of momentum in two dimensions with vector components.
- Visualize where the lost kinetic energy goes using a thermal camera overlay showing heat generated at impact.
