Airplane A is flying north with a constant horizontal velocity of 500 km/h. Airplane B i...

Airplane A is flying north with a constant horizontal velocity of 500 km/h. Airplane B is flying southwest at the same altitude with a velocity of 500 km/h. From the frame of reference of A, determine the magnitude v_r of the apparent or relative velocity of B. Also find the magnitude of the apparent velocity v_n with which B appears to be moving sideways or normal to its centerline. Would the results be different if the two airplanes were flying at different but constant altitudes?