If a distance covered is given in land miles for 1 minute and 45 seconds, how do you calculate speed in knots?

To calculate speed in knots when the distance is given in land miles for a specific time, the correct approach involves converting the time into hours since knots are defined as nautical miles per hour.

By first dividing the distance covered in miles by the time taken, you find the speed in miles per minute. To convert this to knots, you need to adjust this figure to a per-hour basis. Multiplying by 60 achieves this transformation.

For example, if the distance is 'D' miles for the time of 1 minute and 45 seconds (which is 1.75 minutes), the calculation would begin with dividing 'D' by 1.75, giving miles per minute. Then, multiplying by 60 converts it to an hourly rate, resulting in speed expressed in miles per hour. To ultimately get knots, you may need to convert miles to nautical miles, as knots are a measurement of nautical miles per hour.

This method effectively provides the speed in knots from the distance covered in land miles within the specified time frame, ensuring accurate representation of speed relevant to aviation and nautical contexts.