A-LevelPhysicsWork, energy and powerMay/June 2017Paper 1 Q171 Mark
A railway engine accelerates a train of total mass 1200 tonnes (1 tonne = 1000 kg) from rest to a speed of 75 ms⁻¹. How much useful work must be done on the train to reach this speed?
A3.4 x 10⁶ J
B6.8 x 10⁶ J
C3.4 x 10⁹ J
D6.8 x 10⁹ J
✓ Correct Answer
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...
📋 Examiner Report & Trap Analysis
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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