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An airplane travels at a constant velocity. At 8:00 AM, it is at position \(A(100, 200, 10)\). At 8:15 AM, it is at position \(B(160, 170, 9.5)\). Distances are measured in kilometres.
Find the velocity vector of the airplane in km/h.
Find the speed of the airplane in km/h, correct to one decimal place.
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