A-LevelPhysicsWork, energy and power9702/12 · Oct/Nov 2011 · Q151 Mark

When a horizontal force F is applied to a frictionless trolley over a distance s, the kinetic energy of the trolley changes from 4 J to 8 J. If a force of 2F is applied to the trolley over a distance of 2s, what will the original kinetic energy of 4 J become?

A16 J

B20 J

C32 J

D64 J

✓ Correct answer

B: 20 J

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Topic: Work, energy and power, A-Level Physics (syllabus 9702). Multiple choice, 1 mark.
Source: A-Level Physics, Oct/Nov 2011 Paper 1 Variant 2, question 15.

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