To what extent can the acceleration of a cart-pulley system be determined from the height difference of water in a container placed on the accelerating system?SL
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A
Official IB Result
IB Grade: A
Criteria A: Focus and Method
4/6
0
3
6
Criteria StrandsPro
A.1Topic clarity and communication
Excellent
A.2Research question formulation and focus
Excellent
A.3Methodology appropriateness and completeness
Excellent
Criteria Feedback
- The student communicates a clear and specific experimental topic with a meaningful purpose.
- The student's research question is explicitly stated and stays closely connected to the investigation.
- The student's methodology is substantial and includes repeated trials, independent comparison data, and controlled measurements.
- Some notation and symbols are inconsistent, which occasionally makes the procedure harder to follow.
- A few methodological choices need stronger justification, especially around video analysis and camera alignment.
- The question could be sharpened further by making the comparison basis more operational from the outset.
Criteria B: Knowledge and Understanding
5/6
0
3
6
Criteria StrandsPro
B.1Subject knowledge application
Good
B.2Use of terminology and concepts
Moderate
Criteria Feedback
- The student shows good command of the relevant physics and uses key ideas such as Newton’s second law and rotational dynamics appropriately.
- Most terminology is used correctly and in a way that supports the scientific discussion.
- The student's explanations generally show that they understand how the model connects to the experiment.
- Some notation is not controlled consistently, which reduces precision in places.
- The treatment of the pulley system is not always fully developed, especially where two pulleys are involved.
- A few numerical and dimensional statements are not handled with enough care for consistently excellent accuracy.
Criteria C: Critical Thinking
9/12
0
6
12
Criteria StrandsPro
C.1Research analysis and evaluation
Moderate
C.2Discussion and argument development
Moderate
C.3Critical evaluation
Moderate
Criteria Feedback
- Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
- Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.
- Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur.
- Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.
Criteria D: Presentation
4/4
0
2
4
Criteria StrandsPro
D.1Structure and formatting
Good
D.2Layout and visual elements
Good
Criteria Feedback
- Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
- Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.
- Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur.
- Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.
Criteria E: Engagement (Reflection)
Criteria StrandsPro
Criteria Feedback
- Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
- Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.
- Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur.
- Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.