posted by Realone .
An aeroplane leaves a point on latitude 54°S at 10 a.m.it flies due south at a steady speed at 800km/h. (a)what is the latitude at mid-day(b) At what time does it pass over the south pole
1 degree of latitude is about 111 km. So,
800 km/hr ≈ 800/111 = 7.2°/hr