If a plane travels 2.7 statute miles in 43 seconds, what is the ground speed in knots?

If a plane travels 2.7 statute miles in 43 seconds, what is the ground speed in knots?

• A. 200 knots
• B. 240 knots
• C. 260 knots
• D. 280 knots

Answer: (C)

To determine the ground speed in knots, first, we need to convert the distance traveled and time into the appropriate units. A knot is defined as one nautical mile per hour, so we need to convert statute miles to nautical miles and seconds to hours. 1. **Convert statute miles to nautical miles**: There are 0.868976 nautical miles in a statute mile. Therefore, to convert 2.7 statute miles to nautical miles: \[ 2.7 \text{ statute miles} \times 0.868976 \text{ nautical miles/statute mile} \approx 2.345 \text{ nautical miles} \] 2. **Convert seconds to hours**: There are 3600 seconds in an hour, so to convert 43 seconds to hours: \[ 43 \text{ seconds} \div 3600 \text{ seconds/hour} \approx 0.0119444 \text{ hours} \] 3. **Calculate ground speed in knots**: Now we can calculate ground speed using the formula: \[ \text{Ground Speed (knots)} = \frac{\text{Distance in nautical miles}}{\text{Time in hours

To determine the ground speed in knots, first, we need to convert the distance traveled and time into the appropriate units. A knot is defined as one nautical mile per hour, so we need to convert statute miles to nautical miles and seconds to hours.

1. Convert statute miles to nautical miles: There are 0.868976 nautical miles in a statute mile. Therefore, to convert 2.7 statute miles to nautical miles:

[

2.7 \text{ statute miles} \times 0.868976 \text{ nautical miles/statute mile} \approx 2.345 \text{ nautical miles}

]

2. Convert seconds to hours: There are 3600 seconds in an hour, so to convert 43 seconds to hours:

[

43 \text{ seconds} \div 3600 \text{ seconds/hour} \approx 0.0119444 \text{ hours}

]

3. Calculate ground speed in knots: Now we can calculate ground speed using the formula:

[

\text{Ground Speed (knots)} = \frac{\text{Distance in nautical miles}}{\text{Time in hours