An underwater survey vehicle moves along a straight flooded tunnel. East is chosen as the positive direction.
The table gives the velocity of the vehicle at three times.
| Record | Velocity |
|---|---|
| P | −1.8 m s−1-1.8\ \mathrm{m\,s^{-1}}−1.8 ms−1 |
| Q | −3.2 m s−1-3.2\ \mathrm{m\,s^{-1}}−3.2 ms−1 |
| R | −4.6 m s−1-4.6\ \mathrm{m\,s^{-1}}−4.6 ms−1 |
A student claims that the vehicle has a lower speed in record Q than in record P because its velocity is more negative.
Evaluate the student's claim.
Explain how the speed and velocity of the vehicle change from record Q to record R.
93 exam-style questions on Edexcel GCSE Physics 9.1 Forces and vectors, covering 9.1.1 Interactions and types of force, 9.1.2 Vector and scalar quantities, and 9.1.3 Vector diagrams and free body diagrams. Each one has a worked solution and a mark scheme showing where the marks go.