Reference Frames and Relative Motion ** A plane is headed due west with an air speed of 231 m/s. The wind blows south at 28.0 m/s. Find the velocity of the plane relative to the earth. Part 1 + To solve this problem it will be necessary to determine the plane's velocity relative to the the air. What is the plane's east- west velocity relative to the air? (Define the positive direction to be east.) Additionally, to solve this problem it will be necessary to determine the air's velocity relative to the earth. what is the air's north-south velocity relative to the earth? (Define the positive direction to be north.) Part 2 Find the velocity of the plane relative to the earth. magnitude: direction: degrees south of west Submit