Verify the law of conservation of momentum by using colliding balls of the same size but different masses to observe momentum transfer in action. Durable, modular setup built with aluminum alloy rails, brackets, and scale lines; includes a metal ball, a glass ball, a plastic ball (diameter: 16 mm) and a copper weight for flexible experiments. Educational value: active physical activities and research enhance students' observation skills, stimulate questions, and help connect classroom concepts to real life. Practical physics learning: use this kinetic potential energy demonstrator to study basic physics principles through handson experiments. Key attributes Function: supports momentum verification experiments and studies of energy transfer. Compatibility: designed around a railandbracket framework with builtin scale lines for precise measurements. Size: plastic ball diameter 16 mm; other ball sizes and weights included are specified by the setup. Material: aluminum alloy rails and brackets; balls made of metal, glass, and plastic; copper weight. Performance: sturdy construction enables repeated, reliable collisions and measurement of outcomes. Use scenarios Classroom demonstration: students observe momentum conservation by colliding balls of equal size with different masses and recording velocity changes. Guided experiments: learners vary masses and collision configurations to analyze momentum transfer and energy exchange between bodies. Inquirybased learning: students connect experimental results to theoretical concepts, collect data, and relate findings to reallife physics problems.