The Site from Which an Airplane Takes Off Is the Origin

Multiple Choice

The site from which an airplane takes off is the origin. The x axis points east; the y axis points straight up. The position and velocity vectors of the plane at a later time are given by ​ and .
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The plane is most likely

A) just touching down.
B) in level flight in the air.
C) ascending.
D) descending.
E) taking off.