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SingaporeCombined ScienceQuick questions
Physics: Measurement, Forces and Energy
Quick questions on Physical quantities and measurement explained: O-Level Combined Science
4short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.
What are prefixes?Show answer
Prefixes scale a unit up or down so we avoid awkward numbers:
What is q1?Show answer
State the SI unit of mass and of time. [2 marks]
What is q2?Show answer
Convert to metres, giving your answer in standard form. [2 marks]
What is q3?Show answer
Explain why force is a vector but mass is a scalar. [2 marks]
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