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  3. 3.) to maintain a constant speed, the force provid

3.) To maintain a constant speed, the force provided by a car's engine must equal the...

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Physics

3.) To maintain a constant speed, the force provided by a car'sengine must equal the drag force plus the force of friction of theroad (the rolling resistance). Assume all values are accurate tothree significant digits. (Assume the density of air is 1.21kg/m3.)

A.) What is the magnitude of drag force (in N) at 58 km/h and116 km/h for a Toyota Camry? (Drag area is 0.70 m2, anddrag coefficient is 0.28.)

B.) What is the magnitude of drag force (in N) at 58 km/h and116 km/h for a Hummer H2? (Drag area is 2.44 m2, anddrag coefficient is 0.64.)

Answer & Explanation Solved by verified expert
4.3 Ratings (830 Votes)
PART AThe drag force is given byWhere is the density ofthe fluid In our case 121 kgm3 isrelative    See Answer
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