A watermelon seed has the following coordinates: x = -1.4 m, y = 5.6 m, and z = 0 m. Find its position vector as (a) a magnitude and (b) an angle relative to the positive direction of the x axis. If the seed is moved to the xyz coordinates (6.5 m, 0 m, 0 m), what is its displacement as (c) a magnitude and (d) an angle relative to the positive direction of the x axis?

Question

anonymous · Answer

$|\vec r|=\sqrt{(-1.4)^2+(5.6)^2+0^2}$
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