The aerodynamic drag on a car depends on the shape of the car. A car has...

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The aerodynamic drag on a car depends on the "shape" of the car. A car has a drag coefficient of 0.36 when the windows and roof are closed. With the windows and roof open, the drag coefficient increases to 0.45. Determine the car speed required to overcome the aerodynamic drag when the windows and roof are open to maintain the same amount of power as it is when the car is travelling at 105 km/hr with windows and roof closed. Assume the frontal area remains the same. The aerodynamic drag on a car depends on the "shape" of the car. A car has a drag coefficient of 0.36 when the windows and roof are closed. With the windows and roof open, the drag coefficient increases to 0.45. Determine the car speed required to overcome the aerodynamic drag when the windows and roof are open to maintain the same amount of power as it is when the car is travelling at 105 km/hr with windows and roof closed. Assume the frontal area remains the same.

Answer rating: 100% (QA)

SOLUTION To solve this problem we can use the formula for aerodynamic drag Drag 05 rho Cd A V2 where Drag is the aerodynamic drag force rho is the air density Cd is the drag coefficient A is the front... View the full answer