Concept explainers
Visualize the connections and give the descriptive motion answers in the blanks.
Answer to Problem 1VC
(a)Speed
(b)Uniform velocity
(c)Accleration(change in velocity magnitude)
(d)Accleration(change in velocity magnitude and direction)
Explanation of Solution
Speed is a scalar quantity. It has only magnitude and no direction. It is the total distance traveled per unit time.
Velocity is a vector quantity. It has both magnitude and direction. It is the displacement per unit time. Uniform velocity implies equal velocity for equal intervals of time.
Acceleration is a vector quantity. It is the rate of change of velocity. A body moving in a curve has centripetal force exerting on it. For a force, there must be some acceleration. The change in the direction of the velocity also causes the body to accelerate.
Conclusion:
Therefore, this visual image can be connected as follows,
(a)Speed
(b)Uniform velocity
(c)Accleration(change in velocity magnitude)
(d)Acceleration(change in velocity magnitude and direction)
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Chapter 2 Solutions
An Introduction to Physical Science
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