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 m and m/s.

The plane is most likely
A)just touching down.
B)in level flight in the air.
C)ascending.
D)descending.
E)taking off.

Question

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 ​  m and  m/s.
​
The plane is most likely
A)just touching down. 
B)in level flight in the air. 
C)ascending. 
D)descending. 
E)taking off.

Quizplus · Accepted Answer

Since the y-component of the velocity vector is positive, the plane is ascending.

The Site from Which an Airplane Takes Off Is the Origin