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Horsepower / Power in Watts Required to Overcome Air Resistance |
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IMPERIAL Horsepower / Power in Watts Required to Overcome Air Resistance The horsepower required to overcome air resistance is the speed in miles per hour, cubed, times the frontal area in square feet divided by 150,000
Where:MPH = Speed in miles per hour FA = Frontal area in square feet HP = Horsepower 150,000 = A conversion constant Example:What is the horsepower required to overcome air resistance of a vehicle travelling 40 miles per hour and having a frontal area of 80 square feet?
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METRIC Horsepower / Power in Watts Required to Overcome Air Resistance The power in watts required to overcome air resistance is the speed in kilometres per hour, cubed, times the frontal area in square metres divided by 77.86
Where:MPH = Speed in kilometres per hour FA = Frontal area in square metres P = Power in Watts 77.86 = A conversion constant Example:What is the power in watts required to overcome air resistance of a vehicle travelling 65 kilometres per hour and having a frontal area of 7.5 m2?
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