11-119 A car is moving at a speed of 70 km/h in air at 20°C. The frontal area of the car is 2.4 m². If the drag force acting on the car in the flow direction is 205 N, the drag coefficient of the car is (a) 0.312 (b) 0.337 (c) 0.354 (d) 0.375 (e) 0.391

11-119 A car is moving at a speed of 70 km/h in air at 20°C. The frontal area of the car is 2.4 m². If the drag force acting on the car in the flow direction is 205 N, the drag coefficient of the car is (a) 0.312 (b) 0.337 (c) 0.354 (d) 0.375 (e) 0.391

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter5: More Applications Of Newton’s Laws

Section: Chapter Questions

Problem 29P

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Rotational Equilibrium And Rotational Dynamics

In physics, the state of balance between the forces and the dynamics of motion is called the equilibrium state. The balance between various forces acting on a system in a rotational motion is called rotational equilibrium or rotational dynamics.

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Question

(please type answer not write by hend)

11-119 A car is moving at a speed of 70 km/h in air at 20°C. The frontal area of the car is 2.4 m². If the drag
force acting on the car in the flow direction is 205 N, the drag coefficient of the car is
(a) 0.312
(b) 0.337
(c) 0.354
(d) 0.375
(e) 0.391

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