Final answer:
To improve outcomes in a projectile motion experiment, equipment should be calibrated accurately, multiple trials should be conducted to average results, and environmental factors like air resistance should be controlled or accounted for.
Step-by-step explanation:
To improve the outcome when repeating the projectile motion lab, certain modifications can be made to the experiment setup and procedure. Firstly, meticulous calibration of the measuring equipment is essential to decrease systematic errors. For instance, if experimental acceleration differs from the assumed 9.8 m/s² due to errors, more precise timing devices or motion sensors could be used. High-speed cameras can provide more accurate measurements of positions and velocities, thus enhancing data quality. Secondly, conducting the experiment multiple times and taking the average of the results can help mitigate random errors. It's also beneficial to minimize external influences like air resistance by performing the experiment in a controlled environment or adjusting calculations to account for such factors. This ensures that the data collected will reflect the true principles of projectile motion, as air resistance can significantly alter the path and acceleration of a projectile. By systematically addressing the sources of errors and refining the experimental techniques, the student can improve the accuracy of findings related to the physics of projectile motion, better reflecting the expected theoretical values.