The student clearly states the independent variable as the radius of the steel ball and the dependent variable as the terminal velocity in the research question. While the student provides a well-explained background theory and methodology, they fail to specify the software used for measurement, which is necessary for clarity. The choice of techniques for measuring variables is well articulated, but there is a lack of explanation regarding the selection of the video analysis software and the sampling technique. Additionally, the student does not adequately discuss the number of trials or the precision of measurements, although they do identify and control various variables effectively, and address safety, ethical, and environmental considerations thoroughly. Overall, the methodology is well described and free of irrelevant information, allowing for reproducibility.
