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The terrain slopes at 4.3 degrees. It forms a right angled triangle with the vertical and the ground as the other two sides. Now, the pilot will hit the terrain if the height of the vertical = 35m.
tan4.3 = 35/x => x = 35/tan4.3 = 467metres.
His speed = 1300 x 5/18 = 361m/s.
Therefore, required time = x/v = 467/361 = 1.293 seconds.
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Moderation Team
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