To maintain a constant speed, the force provided by a car's engine must equal the drag force plus the force of friction of the road (the rolling resistance). Assume all values are ac to three significant digits. (Assume the density of air is 1.21 kg/m3.) (a) What is the magnitude of drag force (in N) at 61 km/h and 125 km/h for a Toyota Camry? (Drag area is 0.70 m2, and drag coefficient is 0.28.) 61 km/h 125 km/h N (b) What is the magnitude of drag force (in N) at 61 km/h and 125 km/h for a Hummer H2? (Drag area is 2.44 m2, and drag coefficient is 0.64.) 61 km/h N 125 km/h N
To maintain a constant speed, the force provided by a car's engine must equal the drag force plus the force of friction of the road (the rolling resistance). Assume all values are ac to three significant digits. (Assume the density of air is 1.21 kg/m3.) (a) What is the magnitude of drag force (in N) at 61 km/h and 125 km/h for a Toyota Camry? (Drag area is 0.70 m2, and drag coefficient is 0.28.) 61 km/h 125 km/h N (b) What is the magnitude of drag force (in N) at 61 km/h and 125 km/h for a Hummer H2? (Drag area is 2.44 m2, and drag coefficient is 0.64.) 61 km/h N 125 km/h N
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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Transcribed Image Text:To maintain a constant speed, the force provided by a car's engine must equal the drag force plus the force of friction of the road (the rolling resistance). Assume all values are ac
to three significant digits. (Assume the density of air is 1.21 kg/m3.)
(a) What is the magnitude of drag force (in N) at 61 km/h and 125 km/h for a Toyota Camry? (Drag area is 0.70 m2, and drag coefficient is 0.28.)
61 km/h
125 km/h
N
(b) What is the magnitude of drag force (in N) at 61 km/h and 125 km/h for a Hummer H2? (Drag area is 2.44 m2, and drag coefficient is 0.64.)
61 km/h
N
125 km/h
N
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