The Vector Field $\vec { F } ( x , y ) = x \vec { i } - y \vec { j }$

Essay

The vector field $\vec { F } ( x , y ) = x \vec { i } - y \vec { j }$ represents an ocean current.An iceberg is at the point (1, 2)at t = 0.
Determine the position of the iceberg at time t = 2.