Description: calculation: Flat Throwing Motion Demonstrator is used to calculate the horizontally projected objects and provide accurate data for physical experimentsConservation law verification: Physical Teaching Aid is designed to verify conservation laws, accurately verify the conservation of momentum and energy in elastic collisions within an acceptable error range, and ensure reliable experimental resultsMaterial and size: Education tool is made of metal and measures 24cmx36cmSimple: Physics Experiments Kit has a simple structure and is easy to use, suitable for group experiments in educational environments, and promotes collaborative learning among studentsTeaching aids: Physics Mechanics Experiment makes mechanical concepts more vivid and intuitive, and stimulates students' interest in learning and understanding physical principles through hands on experiments Size Chart: 24cmx36cm/9.45inchx14.17inch Package Includes: 1 Flat Throwing Motion Demonstrator set Note: Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.