Round to the Nearest Tenth Unless Indicated Otherwise $50 \mathrm { mph }$

question 85

Multiple Choice

Round to the nearest tenth unless indicated otherwise.
-Wind resistance or atmospheric drag tends to slow down moving objects. Atmospheric drag varies jointly as an object's surface area A and velocity v. If a car traveling at a speed of $50 \mathrm { mph }$ with a surface area of $36 \mathrm { ft } ^ { 2 }$ experiences a drag of $270 \mathrm {~N}$ (Newtons) , how fast must a car with $35 \mathrm { ft } ^ { 2 }$ of surface area travel in order to experience a drag force of $231 \mathrm {~N}$ ?

• A) \(49 \mathrm { mph }\)
• B) \(46 \mathrm { mph }\)
• C) \(41 \mathrm { mph }\)
• D) \(44 \mathrm { mph }\)

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