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28. The displacement ofan object attached to the end Ufa spring can be modelled by the function Mi) = 2.4 C03[121+ g]. where II is

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28. The displacement ofan object attached to the end Ufa spring can be modelled by the function Mi) = 2.4 C03[121+ g]. where II is the height of the object from the floor, in centimetres. and I is the time, in seconds. Determine the acceleration of the object at time I. [3 marks)

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