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17. An airplane is travelling at a velocity of 450 km/h [S 20 E] when it encounter a wind with a velocity of 140 km/h

17. An airplane is travelling at a velocity of 450 km/h [S 20 E] when it encounter a wind with a velocity of 140 km/h [N 40.E]. What is the ground velocity of the airplane? (A, 5 Marks)

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