A-LevelPhysicsWork, energy and power9702/12 · Oct/Nov 2018 · Q181 Mark

A car of mass 1800 kg accelerates along a horizontal road so that its speed increases from 20 m s⁻¹ to 25 m s⁻¹ in a time of 5.4 s. What is the average useful power output of the car's engine?

A4.2 kW

B38 kW

C120 kW

D1100 kW

✓ Correct answer

B: 38 kW

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Topic: Work, energy and power, A-Level Physics (syllabus 9702). Multiple choice, 1 mark.
Source: A-Level Physics, Oct/Nov 2018 Paper 1 Variant 2, question 18.

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