A-LevelMathematicsMechanicsOct/Nov 2021Paper 4 Q15 Marks
A metal post is driven vertically into the ground by dropping a heavy object onto it from above. The mass of the object is 120 kg and the mass of the post is 40 kg (see diagram). The object hits the post with speed 8 ms¯¹ and remains in contact with it after the impact.
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