What is the drag force exerted on a runner running at 7 min/mi pace (3.83 m/s) on a day with no wind? assume a coefficient of drag of 0.8, an air density of 1.204 kg/m3, and a frontal surface area of 1.0 m2.

7.06454224 Newtons

Explanation:

C = Drag coefficient = 0.8

ρ = Density of air = 1.204 kg/m³

A = Surface area = 1 m²

v = Velocity of wind = 7 min/mi = 3.83 m/s

The Drag force is given by

The drag force exerted on the runner is 7.06454224 Newtons

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