If your groundspeed is 480 knots, what is your equivalent speed in miles per minute?

If your groundspeed is 480 knots, what is your equivalent speed in miles per minute?

• A. 9.2 miles per minute
• B. 7.5 miles per minute
• C. 12.0 miles per minute
• D. 6.3 miles per minute

Answer: (A)

Knots measure nautical miles per hour, so to find miles per minute you convert nautical miles to statute miles and then divide by 60 minutes. 1 nautical mile equals about 1.15078 statute miles. So 480 nautical miles per hour becomes 480 × 1.15078 ≈ 552.4 statute miles per hour. Dividing by 60 minutes gives 552.4 / 60 ≈ 9.2 statute miles per minute. So the equivalent speed is about 9.2 miles per minute.

Knots measure nautical miles per hour, so to find miles per minute you convert nautical miles to statute miles and then divide by 60 minutes.

1 nautical mile equals about 1.15078 statute miles. So 480 nautical miles per hour becomes 480 × 1.15078 ≈ 552.4 statute miles per hour. Dividing by 60 minutes gives 552.4 / 60 ≈ 9.2 statute miles per minute.

So the equivalent speed is about 9.2 miles per minute.