I really need help with these questions they are too hard. Anyways the question is: A helicopter travels with an air speed of 55 m/s. The helicopter heads in the direction [35 degrees N of W]. What is velocity relative to the ground if the wind velocity is (a) 21 m/s [E] and (b) 21 m/s [22 degrees W of N]? I need to converst the speeds to velocity but i dont have time to convert them to displacements. So can anyone please help me?