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Authors:
Fred L. Mannering, Scott S. Washburn
Chapter:
Road Vehicle Performance
Exercise:
Problems
Question:3 | ISBN:9781118120149 | Edition: 5

Question

A vehicle manufacturer is considering an engine for a new sedan (CD = 0.34, Af = 22 ft2). The car is being designed to achieve a top speed of 100 mi/h on a paved surface at sea level (\rho= 0.002378 slugs/ft3). The car currently weighs 2500 lb, but the designers initiallyselected an underpowered engine because they did not account for aerodynamic and rolling resistances. If 2 lb f additional vehicle weight is added for each unit of horsepower needed to overcome the neglected resistance, what will be the final weight of the car if it  is to achieve the 100-mi/h top speed?

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