O-LevelPhysicsEnergy & Work5054/12 · May/June 2015 · Q131 Mark

A builder lifts eight slabs from the ground on to the back of a lorry 1.5 m high. The total time taken is 48 s and each slab weighs 200 N. How much useful power does the builder produce?

A50 W

B400 W

C2400 W

D3200 W

✓ Correct answer

A: 50 W

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Topic: Energy & Work, O-Level Physics (syllabus 5054). Multiple choice, 1 mark.
Source: O-Level Physics, May/June 2015 Paper 1 Variant 2, question 13.

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