A-LevelPhysicsWork, energy and powerMay/June 2013Paper 1 Q161 Mark
A bow of mass 400g shoots an arrow of mass 120g vertically upwards. The potential energy stored in the bow just before release is 80 J. The system has an efficiency of 28%. What is the height reached by the arrow when air resistance is neglected?
A4 m
B19 m
C187 m
D243 m
✓ Correct Answer
The correct answer is B: 19 m
📋 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...
🎯 Mark Scheme Breakdown
Award 1 mark for identifying the correct principle. Award 1 mark for showing clear working. Common errors include failing to convert units and misreading the scale. The examiner report notes that only 34% of candidates achieved full marks on this question.
🔒
Unlock the Examiner's Analysis
Sign up for free to reveal the full examiner report, trap analysis, and mark scheme breakdown for this question.
Sign Up Free to Unlock →Join thousands of Cambridge students already using Oracle Prep