Imagine that in another universe the speed of light is only 100 m/s. (a) A person traveling along an inter- state highway at 120 km/h ages at what fraction of the rate of a person at rest? (b) This traveler passes by a meterstick at rest on the highway. How long does the meterstick appear?

Imagine that in another universe the speed of light is only 100 m/s. (a) A person traveling along an inter- state highway at 120 km/h ages at what fraction of the rate of a person at rest? (b) This traveler passes by a meterstick at rest on the highway. How long does the meterstick appear?

Modern Physics

3rd Edition

ISBN:9781111794378

Author:Raymond A. Serway, Clement J. Moses, Curt A. Moyer

Publisher:Raymond A. Serway, Clement J. Moses, Curt A. Moyer

Chapter1: Relativity I

Section: Chapter Questions

Problem 11Q

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Concept explainers

Relativistic Energy and Momentum

According to classical physics, time flow is the same for every observer. But according to einstein's theory, time flow is different for different observers. The idea that time flow is not the same for all may sound strange because we may not experience this effect in everyday life. This effect is only observed when an object moves with some velocity comparable to the velocity of light. This velocity is termed relativistic velocity.

Question

Imagine that in another universe the speed of light is
only 100 m/s. (a) A person traveling along an inter-
state highway at 120 km/h ages at what fraction of the
rate of a person at rest? (b) This traveler passes by a
meterstick at rest on the highway. How long does the
meterstick appear?

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