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Thread: Average Speed of Ship

  1. #1
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    Average Speed of Ship

    One knot is 1 nautical mph, and 1 nautical mile is 6080 feet. If a cruiser ship has an average speed of 3.5 knots, what is the average speed, in mph, of the ship?

    Also, is there an average speed formula?

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  2. #2
    Grand Panjandrum
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    Quote Originally Posted by magentarita View Post
    One knot is 1 nautical mph, and 1 nautical mile is 6080 feet. If a cruiser ship has an average speed of 3.5 knots, what is the average speed, in mph, of the ship?

    Also, is there an average speed formula?

    $\displaystyle 3.5\ \text{kts} = 3.5 \times 6080\ \text{fph}$

    $\displaystyle 3.5 \times 6080\ \text{fph} = \frac{3.5 \times 6080}{5280}\ \text{mph}$

    (5280 ft = 1 statute mile)

    CB
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  3. #3
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    I got

    Quote Originally Posted by CaptainBlack View Post
    $\displaystyle 3.5\ \text{kts} = 3.5 \times 6080\ \text{fph}$

    $\displaystyle 3.5 \times 6080\ \text{fph} = \frac{3.5 \times 6080}{5280}\ \text{mph}$

    (5280 ft = 1 statute mile)

    CB
    I got 4.03 as the average speed.
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