IAH THEM CAL CIATION OF AMERICA webwork/ ma 3172 keit wayland/tarea14-5.1/12 Tar
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IAH THEM CAL CIATION OF AMERICA webwork/ ma 3172 keit wayland/tarea14-5.1/12 Tarea14-5.1: Problem 12 Previous Problem Problem List Next Problem are cdefined by their liongitude (how far east or west you are) and lattide how far north or south you are). is one minute of degree of longitude along the equator. (A nautical mile is a little Traveling at x knots means traveling at x nautical miles per hour. Suppose you fly in a Lockheed SR-71 (the Both latitude and longitude are angles. A nautical mile minute of knots (roughly the top speed of the SR-71). Ignoring issues o fastest jet ever built) along the equator at a speed of 1,800 such, it takes you airplane! hours to fly once around the world. You leave after breakfast and are back in time for a late dinner. Some Hint: Flying once around the equator you cover 360 degrees of longitude. Preview My Answers Submit Answers You have attempted this problem 0 times. You have 4 attempts remaining. Emal instructor MacBook ProExplanation / Answer
As mentioned one nautical mile covers 1 minute along the longitude. This means 60 nautical mile will cover 60 minutes OR 1 complete degree.
To complete a trip around the world, the airplane needs to complete 360 degrees. This means the plane needs to cover
360*60 nautical miles = 21600 nautical miles.
We also know the the plane is flying at a speed of 1800 knots which is equivalent to 1800 nautical miles per hour.
Thus the time it will take the plane to complete a trip across the equator will be
Distance to be travelled / Speed of travel
= 21600 nautical miles / 1800 nautical miles per hour
= 12 hours.
Hence it will take 12 hours to complete the trip.