8. A car has a frontal projected area of 1.6 m² and travels at 60 km/h. It has a drag coefficient of 0.35 based on frontal area. (i) Calculate the power required to overcome wind resistance by the car. (ii) If the drag coefficient is reduced to 0.30 by streamlining, for the same power expended in overcoming air resistance, what speed of the car is possible? Take Pir 1.2 kg/m³
8. A car has a frontal projected area of 1.6 m² and travels at 60 km/h. It has a drag coefficient of 0.35 based on frontal area. (i) Calculate the power required to overcome wind resistance by the car. (ii) If the drag coefficient is reduced to 0.30 by streamlining, for the same power expended in overcoming air resistance, what speed of the car is possible? Take Pir 1.2 kg/m³
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Transcribed Image Text:A car has a frontal projected area of 1.6 m² and travels
at 60 km/h. It has a drag coefficient of 0.35 based on
frontal area.
(i)
Calculate the power required to overcome wind resistance
by the car.
(ii)
If the drag coefficient is reduced to 0.30 by streamlining,
for the same power expended in overcoming air resistance,
what speed of the car is possible?
Take Pair
= 1.2 kg/m³
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