Concept explainers
To Choose: The correct option.
Answer to Problem 40R
The correct option is (C).
Explanation of Solution
Introduction:
To figure out how far an object is positioned or how fast it is traveling, one needs a reference point from which to calculate it. Any physical calculation is begun from a point of reference. Measurement is object’s status with respect to some other related parameter.
Speed is the scalar quantity and it is expressed as distance/time. The acceleration over time is not a defined parameter. The change in velocity by time is acceleration. The displacement of the object over time is the velocity.
So, options (A), (B) and (D) are wrong. Option (C) is correct option.
Conclusion:
Hence, the speed is a distance/time.
Chapter 2 Solutions
Glencoe Physical Science 2012 Student Edition (Glencoe Science) (McGraw-Hill Education)
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Anatomy & Physiology (6th Edition)
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