Asked by Anonymous
An aeroplane flies from P(lat 45°N, long 17°W) to Q(lat 45°N, long 53°E) . what is the distance covered by the aeroplane? If the time of flight is 6hours, what is the average speed of the aeroplane
Answers
Answered by
oobleck
If the earth's circumference at the equator is C, then at latitude θ, the circumference is is C cosθ
so the distance traveled is d = (17+53)/360 * C cos45°
and as usual, speed is distance/time
so the distance traveled is d = (17+53)/360 * C cos45°
and as usual, speed is distance/time