Karyn is running in the boston marathon

Reference no: EM13900343

Karyn is running in the Boston Marathon with an average speed of 3.35 m/s. The density of the air is 1.2 kg/m3 , Karyn’s cross-sectional area is 0.50 m2 , and the coefficient of drag is 1.1. As Karyn approaches Heartbreak Hill, the head wind picks up to 2 m/s. a) Calculate drag force that Karyn experiences. b) As she faces the headwind, Karyn instinctively crouches to reduce her cross-sectional area to 0.45 m2 . What is the new drag force that Karyn experiences? c) Can the flow of the air as it passes Karyn be described as laminar flow or turbulent flow? Why?

Reference no: EM13900343

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