A-LevelPhysicsDynamics9702/12 · May/June 2010 · 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.
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A0.3 m s⁻²
B0.8 m s⁻²
C3.0 m s⁻²
D8.0 m s⁻²
✓ Correct answer
C: 3.0 m s⁻²
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