A particle is projected upwards from a point A on the ground. The point B is 90m vertically above A. Given that the particle is above the level of B for 7s. Find the (a) the greatest height of the particle from the ground (b) the total time for the flight

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02-12-2022
Mathematics

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A particle is projected upwards from a point A on the ground. The point B is 90m vertically above A. Given that the particle is above the level of B for 7s. Find the (a) the greatest height of the particle from the ground (b) the total time for the flight

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