The aerodynamic drag on a car depends on the "shape" of the car. For example, the car shown in figure below has a drag coefficient of 0.36 with the windows and roof closed. With the windows and roof open, the drag coefficient increases to 0.43. With the windows and roof open, at what speed is the amount of power needed to overcome aerodynamic drag the same as it is at 65 mph with the windows and roof closed? Assume the frontal area remains the same. Recall that power is force times velocity.
The aerodynamic drag on a car depends on the "shape" of the car. For example, the car shown in figure below has a drag coefficient of 0.36 with the windows and roof closed. With the windows and roof open, the drag coefficient increases to 0.43. With the windows and roof open, at what speed is the amount of power needed to overcome aerodynamic drag the same as it is at 65 mph with the windows and roof closed? Assume the frontal area remains the same. Recall that power is force times velocity.
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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Transcribed Image Text:The aerodynamic drag on a car depends on the "shape" of the car. For example, the car shown in figure
below has a drag coefficient of 0.36 with the windows and roof closed. With the windows and roof open,
the drag coefficient increases to 0.43. With the windows and roof open, at what speed is the amount of
power needed to overcome aerodynamic drag the same as it is at 65 mph with the windows and roof
closed? Assume the frontal area remains the same. Recall that power is force times velocity.
Windows and roof
Windows open; roof
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