A-LevelPhysicsDynamicsMay/June 2010Paper 1 Q141 Mark
A brick weighing 20 N rests on an inclined plane. The weight of the brick has a component of 10 N parallel with the plane. The brick also experiences a frictional force of 4 N. [Figure 14.1] What is the acceleration of the brick down the plane? Assume that the acceleration of free fall g is equal to 10 m s⁻².
A0.3 m s⁻²
B0.8 m s⁻²
C3.0 m s⁻²
D8.0 m s⁻²
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The correct answer is C. This question tests the candidate's understanding of dynamics 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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