How do you convert ROS from ft/min to ft/s?

Prepare for the NWCG Introduction to Wildland Fire Behavior Calculations (S-390) Test. Study with interactive questions and explanations to ensure you're ready for the challenge.

Multiple Choice

How do you convert ROS from ft/min to ft/s?

Explanation:
Converting ROS from ft/min to ft/s relies on the time relationship: 1 minute equals 60 seconds. Since the rate is feet per minute, express the same pace in feet per second by multiplying by 1/60 (or dividing by 60). In other words, ft/min × (1/60) = ft/s. For example, 60 ft/min equals 1 ft/s. Subtracting or adding 60 has nothing to do with changing the time unit, and multiplying by 60 would keep the per-minute unit and inflate the number. So dividing by 60 is the correct method.

Converting ROS from ft/min to ft/s relies on the time relationship: 1 minute equals 60 seconds. Since the rate is feet per minute, express the same pace in feet per second by multiplying by 1/60 (or dividing by 60). In other words, ft/min × (1/60) = ft/s. For example, 60 ft/min equals 1 ft/s. Subtracting or adding 60 has nothing to do with changing the time unit, and multiplying by 60 would keep the per-minute unit and inflate the number. So dividing by 60 is the correct method.

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