What Does the Plane's Position and Velocity Indicate About Its Flight Status?

[XodoX]

Homework Statement

The site from which an airplane takes off if 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:
r=(1.61*10^2i) m and v =+100i m/s
The plane most likely is____

a) ascending b) descending c) just touching down d) in level flight in the air e) taking off

Homework Equations

The Attempt at a Solution

Thought I could exclude C because it's greater than 0, but j isn't give and j could be 0. No idea what the correct answer is.

 

[Nugatory]

Think about what the position and velocity vectors of the airplane would look like for each of the five answers to the multiple choice. There's no need to get all quantitative and do calculations; it's enough to just think about what it would mean if each of the i and j components were positive, zero, or negative.