In an experiment to measure the speed of a toy car rolling down a runway, a student uses a stopwatch to find the time taken for the car to travel from marker P to marker Q. She repeats this measurement six times.
The table below shows her results:
| Measurement | Time / s |
|---|---|
| first | 1.2 |
| second | 1.5 |
| third | 1.1 |
| fourth | 1.4 |
| fifth | 1.3 |
| sixth | 1.3 |
Which value for the time should be used to calculate the speed of the toy car?
1.1 s1.1\text{ s}1.1 s
1.2 s1.2\text{ s}1.2 s
1.3 s1.3\text{ s}1.3 s
1.5 s1.5\text{ s}1.5 s
164 exam-style questions on CIE IGCSE Physics Physical quantities and measurement techniques, covering Physical quantities and measurement techniques. Each one has a worked solution and a mark scheme showing where the marks go.