A group of students are investigating terminal velocity. They measure the time taken, ttt, for a small steel sphere to fall through a vertical column of glycerol.
Four students each record three repeat measurements for the same drop height, as shown in the table below:
| Student | Measurement 1 (s) | Measurement 2 (s) | Measurement 3 (s) |
|---|---|---|---|
| Student P | 4.2 | 4.6 | 4.1 |
| Student Q | 4.32 | 4.47 | 4.35 |
| Student R | 4.3 | 4.5 | 4.2 |
| Student S | 4.215 | 4.425 | 4.310 |
Which student collected the most precise data?
Student P
Student Q
Student R
Student S
47 exam-style questions on OCR GCSE Physics Practical skills. Each one has a worked solution and a mark scheme showing where the marks go.