In a particular rear-end car collision the driver's head rotates 45° backward betore being stopped bv the headrest. What is the average angular velocity of the driver's head if the duration of the collision was 0.1s?

In a particular rear-end car collision the driver's head rotates 45° backward betore being stopped bv the headrest. What is the average angular velocity of the driver's head if the duration of the collision was 0.1s?

Glencoe Physics: Principles and Problems, Student Edition

1st Edition

ISBN:9780078807213

Author:Paul W. Zitzewitz

Publisher:Paul W. Zitzewitz

Chapter8: Rotational Motion

Section: Chapter Questions

Problem 49A

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Concept explainers

Centripetal Force

A particle, body, object or certain mass while travelling in a rotational path or semicircular path, experiences an inertia force. If that inertia force pulls the towards the inward of the imaginary circle in the rotation, it is termed as centripetal force.

Question

3.2 In a particular rear-end car collision the driver's head rotates 45° backward betore being stopped bv the headrest. What is the average angular velocity of the driver's head if the duration of the collision was 0.1s?

Definition Definition Rate of change of angular displacement. Angular velocity indicates how fast an object is rotating. It is a vector quantity and has both magnitude and direction. The magnitude of angular velocity is represented by the length of the vector and the direction of angular velocity is represented by the right-hand thumb rule. It is generally represented by ω.

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