Concept explainers
Lizzie is scooting down the Interstate at 17 percent of the
a. What distance does she measure?
b. What distance would she measure at 32 percent the speed of light?
(a)
The distance between the measured mileposts.
Answer to Problem 40A
The distance between the measured mileposts is 5203 ft.
Explanation of Solution
Given:
The distance between mileposts is
The speed is
Formula used:
The expression for relativistic length contraction is,
Here,
Calculation:
The distance between mileposts she measured is,
Conclusion:
Thus, the distance between the measured mileposts is
(b)
The distance between measured mileposts.
Answer to Problem 40A
The distance between the measured mileposts is 5002 ft.
Explanation of Solution
Given:
The distance between mileposts is
The speed is
Formula used:
The expression for relativistic length contraction is,
Here,
Calculation:
The distance between the measured mileposts is,
Conclusion:
Thus, the distance between the measured mileposts is
Chapter 15 Solutions
Conceptual Physics: The High School Physics Program
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