A-LevelMathematicsMechanicsOct/Nov 2019Paper 4 Q611 Marks
A block of mass 3 kg is initially at rest on a rough horizontal plane. A force of magnitude 6N is applied to the block at an angle of θ above the horizontal, where cos θ = 4/25. The force is applied for a period of 5 s, during which time the block moves a distance of 4.5 m.
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