A-LevelPhysicsPhysical quantities and units9702/12 · May/June 2011 · Q21 Mark

To check calculations, the units are put into the following equations together with the numbers. Which equation must be incorrect?

Aforce = 300 J / 6 m

Bpower = 6000 J × 20 s

Ctime = 6 m / 30 ms⁻¹

Dvelocity = 4 ms⁻² × 30 s

✓ Correct answer

B: power = 6000 J × 20 s

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Topic: Physical quantities and units, A-Level Physics (syllabus 9702). Multiple choice, 1 mark.
Source: A-Level Physics, May/June 2011 Paper 1 Variant 2, question 2.

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