# A student lists four physical quantities and their units. Identify which two quantity–unit pairings are incorrect, and for each incorrect pairing, state the correct SI unit.

> Pearson Edexcel International GCSE Physics (4PH1) — 1.1 Units · Identify · 4 marks

> A student writes the following list:
> • Distance — metre (m)
> • Weight — kilogram (kg)
> • Acceleration — metres per second (m/s)
> • Momentum — kilogram metres per second (kg m/s)

## Mark scheme (4 marks)

1. Identifies weight–kilogram as an incorrect pairing
2. States the correct SI unit for weight as the newton (N)
3. Identifies acceleration–metres per second as an incorrect pairing
4. States the correct SI unit for acceleration as metres per second squared (m/s²)

## Related

- [Revision notes for Pearson Edexcel International GCSE Physics (4PH1)](https://www.gradenine.co.uk/learn)
- [How to answer "Identify" questions](https://www.gradenine.co.uk/tools/command-word-cheatsheet)
- [Practice this with AI marking (free)](https://www.gradenine.co.uk/start)

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