The student's essay accurately reflects the aim of the investigation through a clear and appropriately presented title, "The G-forces on Roller Coasters". The introduction outlines the area of research, purpose, and focus of the essay, effectively establishing the context of the research question. Additionally, the relevant physics principles are identified and described qualitatively with appropriate diagrams, and a formal development of the theory follows later in the essay. The emphasis of the research question remains centered on physics, with the student effectively demonstrating how their chosen methods and materials address the research question. However, the student needs to consider and state the uncertainties and limitations of techniques and apparatus for data collection.
