A-LevelPhysicsKinematicsOct/Nov 2016Paper 1 Q101 Mark
In order that a train can stop safely, it will always pass a signal showing a yellow light before it reaches a signal showing a red light. Drivers apply the brake at the yellow light and this results in a uniform deceleration to stop exactly at the red light. The distance between the red and yellow lights is x. If the speed of the train is increased by 20%, without changing the deceleration of the train, what must be the minimum distance between the lights?
A1.20 x
B1.25 x
C1.44 x
D1.56 x
✓ Correct Answer
The correct answer is C. This question tests the candidate's understanding of kinematics 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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