A student writes: 'Speed and velocity are the same thing, because they are both measured in m/s\text{m/s}m/s.'
Explain why the student is wrong.
The student runs once around a circular track of length 400 m and finishes at the point where the run started. Give the displacement of the student at the end of the run.
Explain why the distance the student runs is not zero.
Mass and weight are confused in a similar way. Describe the difference between the mass of an object and the weight of an object.
40 exam-style questions on AQA GCSE Physics 5.1 Forces and their interactions, covering 5.1.1 Scalar and vector quantities, 5.1.2 Contact and non-contact forces, 5.1.3 Gravity, and 5.1.4 Resultant forces. Each one has a worked solution and a mark scheme showing where the marks go.