The student clearly states the independent variable, which is the moisture levels of grass, and the dependent variable, the kinetic coefficient of friction between the grass and a soccer ball. The research question includes a method of analysis, detailing how the kinetic coefficient of friction will be calculated from the displacement of the ball. A thorough background theory relevant to the investigation is provided, demonstrating an understanding of the physics concepts involved. The student explains the techniques for measuring both variables and justifies the choice of moisture levels, ensuring a practical approach to the experiment. Additionally, the methodology is described in detail, with no irrelevant information, allowing for reproducibility of the investigation.
