A small plane is flying directly North with an airspeed of 31.3 m/s. The plane flies into a region where the wind is blowing at 7.24 m/s at an angle of 30° to the south of west. If the pilot does not change the heading of the plane, what will be the magnitude of the plane's velocity with respect to the ground, and how many degrees off-course will the plane have been moved?​