Air Resistance

IMPERIAL		METRIC
Air Resistance		Air Resistance
The air resistance against a vehicle is a force in lbs equal to .0025 times the miles per hour squared times the frontal area. AR = 0.0025 x MPH² x FA AR = Air resistance in lbs MPH = Speed in miles per hour FA = Frontal area of vehicle in square feet Example: What is the air resistance of a vehicle travelling 40 miles per hour and having a frontal area of 80 square feet AR = 0.0025 x (40)² x 80 = 320 lbs		The air resistance against a vehicle is a force in newtons equal to .0462 times the kilometres per hour squared times the frontal area. AR = 0.0462 x KPH² x FA AR = Air resistance in newtons MPH = Speed in kilograms per hour FA = Frontal area of vehicle in square metres Example: What is the air resistance of a vehicle travelling 65 kilometres per hour and having a frontal area of 7.5m²? AR = 0.0462 x (65)² x 7.5 = 1464 N

IMPERIAL

METRIC

Air Resistance

The air resistance against a vehicle is a force in lbs equal to .0025 times the miles per hour squared times the frontal area.

AR = 0.0025 x MPH² x FA

AR = Air resistance in lbs
MPH = Speed in miles per hour
FA = Frontal area of vehicle in square feet

Example:
What is the air resistance of a vehicle travelling 40 miles per hour and having a frontal area of 80 square feet

AR = 0.0025 x (40)² x 80 = 320 lbs

The air resistance against a vehicle is a force in newtons equal to .0462 times the kilometres per hour squared times the frontal area.

AR = 0.0462 x KPH² x FA

AR = Air resistance in newtons
MPH = Speed in kilograms per hour
FA = Frontal area of vehicle in square metres

Example:
What is the air resistance of a vehicle travelling 65 kilometres per hour and having a frontal area of 7.5m²?

AR = 0.0462 x (65)² x 7.5 = 1464 N