You are traveling on an airplane. The velocity of the plane with respect to the air is 120.0 m/s due east. The velocity of the air with respect to the ground is 43.0 m/s at an angle of 30° west of due north. 1.What is the speed of the plane with respect to the ground? I got 82.76 by doing 120-43(cos30) but apparently it was wrong the feedback i got was It looks like you incorrectly calculated the planes velocity with respect to the ground in the east direction. Be careful when you calculate the east-west component of the wind's velocity. Also don't forget to include the winds north-south component to get the total speed of the plane with respect to the ground.