Question

An aeroplane leaves a point on latitude 54°S at 10 a.m. It flies due south at a steady speed of 800km\h.A what is its latitude at mid- day?B at what time does it pass over the south role? Unless told otherwise, use the take 40 000 for 2^R. Take log^ to be 0.4971.

Answer 1

each degree of latitude is 111km, so its speed is 800/111 = 7.2 °/hr