Investigation on how different spins (topspin, backspin and no spin) and launch speed (5, 10, 15, 20, 25, 30, 35, 40m/s) produced by a tennis ball machine affect the trajectory and bounce of the tennis ball?SL
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6
Official IB Result
IB Grade: 6
Criteria A: Research Design
4/6
0
3
6
Criteria StrandsPro
A.1Research question context
Excellent
A.2Methodological considerations for collecting data
Good
A.3Methodological considerations
Good
Criteria Feedback
- The student places the investigation in a clear and meaningful physical context and shows a good understanding of the variables they are trying to test.
- The student's procedure includes several practical controls and enough detail that another student could broadly repeat the experiment.
- The student's research question is still a little broad because it combines more than one outcome without clearly separating them.
- Some important setup details are missing, especially how the machine settings translate into actual launch speed and spin rate.
Criteria B: Data Analysis
3/6
0
3
6
Criteria StrandsPro
B.1Communication of data recording and processing
Good
B.2Consideration of uncertainties
Moderate
B.3Data processing quality
Poor
Criteria Feedback
- The student presents their raw results in an organised way and makes it easy to follow how the measurements were turned into processed values.
- The student shows awareness of measurement uncertainty and uses repeated trials to reveal variation in the data.
- The student's uncertainty treatment is incomplete because the spread in repeated trials is not quantified or carried through the calculations.
- Some of the processing is physically and conceptually insecure, especially where unverified launch conditions are treated as if they were controlled.
- The way the student reports precision is not always consistent, which makes the data handling harder to trust fully.
Criteria C: Conclusion
3/6
0
3
6
Criteria StrandsPro
C.1Conclusion relevance and support
Good
C.2Scientific context comparison
Moderate
Criteria Feedback
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- 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: Evaluation
3/6
0
3
6
Criteria StrandsPro
D.1Methodological weaknesses
Moderate
D.2Suggested improvements
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.