Glencoe Physical Science 2012 Student Edition (Glencoe Science) (McGraw-Hill Education)
Glencoe Physical Science 2012 Student Edition (Glencoe Science) (McGraw-Hill Education)
1st Edition
ISBN: 9780078945830
Author: Charles William McLaughlin, Marilyn Thompson, Dinah Zike
Publisher: Glencoe Mcgraw-Hill
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Chapter 3, Problem 48R
To determine

The forces are acting on a car that is moving in a straight line with constant speed or not.

Expert Solution & Answer
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Explanation of Solution

Introduction:

The algebraic sum of all the forces represents the net force acting on an object. The net force is accountable for developing the acceleration in the object.

When a car moves in a straight line with constant speed, the force of inertia (air resistance), friction force and weight act on the car. Since, the car is moving in astraight linewith the constant speed, so, the acceleration will be zero and the inertia force becomes zero. Thus, only weight and friction force will act on the car.

Conclusion:

Therefore, there can be forces acting on a car that is moving in a straight line with the constant speed.

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Newton's First Law of Motion: Mass and Inertia; Author: Professor Dave explains;https://www.youtube.com/watch?v=1XSyyjcEHo0;License: Standard YouTube License, CC-BY