The student clearly states the independent variable, which is the vertical release height of the solid sphere, and the dependent variable, the final translational velocity squared, in the research question. The methodology is well-defined, detailing the use of a dual-beam photogate for accurate measurements and providing a clear explanation of how the variables were controlled throughout the experiment. The background theory effectively connects conservation of energy principles to the investigation, and the student identifies controlled variables and addresses safety, ethical, and environmental issues associated with the experiment. However, there is a lack of discussion regarding the choice of the number of trials and the precision of measurements, which could enhance the reliability of the results. Overall, the student provides a comprehensive and coherent methodology that allows for reproducibility of the investigation.
