A-LevelPhysicsKinematicsFeb/Mar 2017Paper 1 Q181 Mark
A projectile is thrown at an angle to the ground. [Figure showing a projectile path with horizontal velocity 23.0 m s⁻¹ and vertical velocity -10.1 m s⁻¹ at a point] At a certain time, the projectile has a horizontal velocity of 23.0 m s⁻¹ and a vertical velocity of -10.1 m s⁻¹. What is the speed of the projectile at this time?
A12.9 m s⁻¹
B20.7 m s⁻¹
C25.1 m s⁻¹
D33.1 m s⁻¹
✓ Correct Answer
The correct answer is C: 25.1 m s⁻¹
📋 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.
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