4. A person in a moving boxcar throws a dart across the boxcar; both the boxcar and dart move rightward. The thrower measures the speed of the dart to be 50 m/s. An external observer, at rest with respect to the earth, measures the speed of the boxcar to be 15 m/s. What does the external observer measure the speed of the dart to be?

4. A person in a moving boxcar throws a dart across the boxcar; both the boxcar and dart move rightward. The thrower measures the speed of the dart to be 50 m/s. An external observer, at rest with respect to the earth, measures the speed of the boxcar to be 15 m/s. What does the external observer measure the speed of the dart to be?

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 37P: An observer in reference frame S sees two events as simultaneous. Event A occurs at the point (50.0...

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