Answered: .Car A travels East at a speed of 120…

Physics for Scientists and Engineers with Modern Physics

10th Edition

ISBN:9781337553292

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter3: Vectors

Section: Chapter Questions

Problem 29P

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1.Car A travels East at a speed of 120 kmh while car B travels West at a speed of 80 kmh. Find the velocity of car A relative to car B in kmh. 2.Car A travels at a speed of 120 kmh due East while car B travels due West at a speed of 80 kmh. Find the velocity of car B relative to car A in kmh. 3. In a curvilinear motion, a 0.5 m radius wheel has a tangential acceleration of 10 m/s/s. Find the angular acceleration in rad/s/s. 4.A 10 kg, 0.5 m radius wheel rotates uniformly at a speed of 100 rad/s . Find the centrifugal force ( KN ).

Definition Definition Rate of change of angular velocity. Angular acceleration indicates how fast the angular velocity changes over time. It is a vector quantity and has both magnitude and direction. Magnitude is represented by the length of the vector and direction is represented by the right-hand thumb rule. An angular acceleration vector will be always perpendicular to the plane of rotation. Angular acceleration is generally denoted by the Greek letter α and its SI unit is rad/s 2 .

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