Consider a 1200 kg car presenting a front-end area 2.60 m2 and having a drag coefficient 0.385. It can achieve instantaneous acceleration 3.00 m/s2 when its speed is 10.0 m/s. Ignore any force of rolling resistance. Assume that the only horizontal forces on the car are static friction forward exerted by the road on the drive wheels and resistance exerted by the surrounding air, with density 1.20 kg/m3.(a) Find the friction force exerted by the road.(b) Suppose the car body could be redesigned to have a drag coefficient of 0.165 If nothing else changes, what will be the car's acceleration?(c)Assume that the force exerted by the road remains constant. Then what maximum speed could the car attain with D = 0.385?(d) What maximum speed could the car attain with D = 0.165?

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Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

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Consider a 1200 kg car presenting a front-end area 2.60 m² and having a drag coefficient 0.385. It can achieve instantaneous acceleration 3.00 m/s² when its speed is 10.0 m/s. Ignore any force of rolling resistance. Assume that the only horizontal forces on the car are static friction forward exerted by the road on the drive wheels and resistance exerted by the surrounding air, with density 1.20 kg/m³.

(a) Find the friction force exerted by the road.

(b) Suppose the car body could be redesigned to have a drag coefficient of 0.165 If nothing else changes, what will be the car's acceleration?

(c)Assume that the force exerted by the road remains constant. Then what maximum speed could the car attain with D = 0.385?

(d) What maximum speed could the car attain with D = 0.165?

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