A car is driving into a headwind. Calculate the power (in kW) that is required to overcome drag. A car is traveling due east at a steady speed of 30 m/s. The coefficient of drag for the car is 0.4 and the reference area is 1.5 m². The wind is coming from the northeast at a steady speed of 10 m/s. The density of air is 1.1 kg/m³. Choose the closest answer (kW): 

(a) 8.2 or less, 

(b) 11,

(c) 14, 

(d) 17, or 

(e) 27 or greater.

Transcribed Image Text:

Wind, V = 10 m/s p = 1.1 kg/m' 45 Vc = 30 m/s, Car, Cp= 0.4 ARef = 1.5 m?