You are standing on the ground at the origin of a coordinate system. An airplane

Question

You are standing on the ground at the origin of a coordinate system. An airplane flies over you with constant velocity parallel to the x axis and at a constant height of 6.90 103 m. At t = 0, the airplane is directly above you so that the vector leading from you to it is 0 = 6.90 103 m. At t = 30.0 s the position vector leading from you to the airplane is 30 = (7.34 103 + 6.90 103) m as suggested in the figure below. Determine the magnitude and orientation of the airplane's position vector at t = 75.0 s.

completely lost on this please help..thank you

Explanation / Answer

Unless I'm just missing something, this is a total gimme: In 30 seconds it moved from x=0 to x=7340 meters. At t=75, it will be at x=18350 meters, so the vector should be p(75)=(18.35*10^3m)i + (6.9*10^3m)j magnitude =19.6 angle =20.6 degrees

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