An object moving along a straight line is decelerating. Which one of the following statements concerning the object's acceleration is necessarily true? 1. The value of the acceleration is positive. 2. The direction of the acceleration is in the same direction as the displacement. 3. An object that is decelerating has a negative acceleration. 4. The direction of the acceleration is in the direction opposite to that of the velocity. 5. The acceleration changes as the object moves along the line.

An object moving along a straight line is decelerating. Which one of the following statements concerning the object's acceleration is necessarily true? 1. The value of the acceleration is positive. 2. The direction of the acceleration is in the same direction as the displacement. 3. An object that is decelerating has a negative acceleration. 4. The direction of the acceleration is in the direction opposite to that of the velocity. 5. The acceleration changes as the object moves along the line.

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

Chapter2: Motion In One Dimension

Section2.5: Motion Diagrams

Problem 2.5QQ: Which of the following statements is true? (a) If a car is traveling eastward, its acceleration must...

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