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A stone is projected upwards with an initial speed of 10 m/s from the roof of a building. It takes 6 seconds to reach

A stone is projected upwards with an initial speed of 10 m/s from the roof of a building. It takes 6 seconds to reach the ground. (i) What is the height of the building? (5 marks) (ii) What is the speed of the stone on striking the ground? (neglect air resistance) (5 marks)

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