Colliding Cops

Colliding Cops is an interactive web-based physics simulation and educational tool that visualizes particle dynamics, Brownian motion, and collision behaviors through engaging, real-time animations. Hosted as an open-source project on GitHub, it allows users to explore how particles interact under various physical conditions such as gravity, friction, temperature gradients, and confinement within virtual boundaries. The platform features a central simulation canvas where colorful particles bounce, drift, and collide according to realistic physics rules, demonstrating concepts like kinetic energy transfer, momentum conservation, and emergent behaviors in particle systems. Users can adjust parameters including particle count, size, mass, initial velocity distributions, environmental forces, and boundary conditions to observe how changes affect overall system dynamics. Educational overlays provide real-time data visualizations such as velocity histograms, energy distributions, collision frequency graphs, and temperature maps, helping learners connect macroscopic observations with underlying statistical mechanics principles. The simulation supports multiple physics modes including elastic collisions, inelastic damping, gravitational clustering, and thermal equilibrium states, making it suitable for classroom demonstrations, self-study, and research prototyping. Designed for accessibility, Colliding Cops runs entirely in modern web browsers using HTML5 Canvas and JavaScript, requiring no installation or plugins. The open-source nature encourages community contributions, custom physics experiments, and integration into educational websites or learning management systems. It serves high school physics students, university undergraduates studying thermodynamics and statistical physics, as well as hobbyists interested in computational physics and interactive simulations. Additional learning resources include embedded explanations of key concepts like the ideal gas law, Maxwell-Boltzmann distribution, diffusion processes, and phase transitions, presented through tooltips, side panels, and exportable data tables. The platform emphasizes intuitive controls and immediate visual feedback, transforming abstract physics equations into tangible, explorable phenomena.