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Solve the Problem 30mph30 \mathrm { mph } With a Surface Area Of

Question 507

Multiple Choice

Solve the problem. 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 30mph30 \mathrm { mph } with a surface area of 31ft231 \mathrm { ft } ^ { 2 } experiences a drag of 130.2 N130.2 \mathrm {~N} (Newtons) , how fast must a car with 50ft250 \mathrm { ft } ^ { 2 } of surface area travel in order to experience a drag force of 525 N525 \mathrm {~N} ?


A) 75mph75 \mathrm { mph }
B) 77mph77 \mathrm { mph }
C) 72mph72 \mathrm { mph }
D) 80mph80 \mathrm { mph }

Correct Answer:

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