A-LevelPhysicsWork, energy and powerOct/Nov 2016Paper 1 Q191 Mark
The speed of a car increases from 10 m s⁻¹ to 15 m s⁻¹ and its kinetic energy increases by E₁. Later, the speed of the car increases from 15 m s⁻¹ to 25 m s⁻¹ and its kinetic energy increases by E₂. What is the ratio E₂/E₁?
A1.6
B2.6
C3.2
D4.0
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The correct answer is C. This question tests the candidate's understanding of work, energy and power within the Physicssyllabus. The examiner's mark scheme requires...
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Common mistake: 62% of candidates selected the distractor because they confused... The examiner specifically designed this question to test whether students can differentiate between... To secure full marks, candidates must demonstrate...
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