Canadian geese migrate essentially along a north-south direction for well over a thousand kilometers in some cases, traveling at speeds up to about...

Canadian geese migrate essentially along a north-south direction for well over a thousand kilometers in some cases, traveling at speeds up to about 100 {rm km/h}. If one such bird is flying at 100 {rm km/h} relative to the air, but there is a 30.0 {rm km}/{rm h} wind blowing from west to east.At what angle relative to the north-south direction should this bird head so that it will be traveling directly southward relative to the ground?How long will it take the bird to cover a ground distance of 450 {rm km} from north to south? (Note: Even on cloudy nights, many birds can navigate using the earth's magnetic field to fix the north-south direction.)