Final Answer:
To include repetition in their experiment, the student should Perform multiple trials for each release height instead of just one measurement.Thus the option 1) Perform multiple trials for each release height instead of just one measurement. is correct.
Step-by-step explanation:
Repetition is a crucial element in scientific experiments to enhance the reliability and validity of results. In the context of the given options, option 1 is the correct choice. Performing multiple trials for each release height ensures that the experiment accounts for variability and provides a more accurate representation of the relationship between release height and the measured outcomes.
This approach helps minimize the impact of random errors and enhances the robustness of the experimental data.Options 2, 3, and 4 do not effectively introduce repetition in the experiment. Using a different timer for each height (Option 2) introduces a confounding variable and may lead to inconsistent measurements.
Similarly, using a different ramp for each height (Option 3) and performing one trial with a different car for each height (Option 4) do not systematically address variability and may not provide a reliable basis for drawing conclusions about the relationship between release height and the experiment's outcomes.
In scientific experimentation, incorporating repetition through multiple trials is a standard practice to ensure the credibility and generalizability of the findings.
Thus the option 1) Perform multiple trials for each release height instead of just one measurement. is correct.