A spacecraft with length 100 meters passes an observer on earth. The observer measures the passing spacecraft to be 80 meters long. What is the velocity of the rocket in the reference frame of the Earth-based observer? O 0.3c O 0.8c O 0.6c 0.02

A spacecraft with length 100 meters passes an observer on earth. The observer measures the passing spacecraft to be 80 meters long. What is the velocity of the rocket in the reference frame of the Earth-based observer? O 0.3c O 0.8c O 0.6c 0.02

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 9P: A spacecraft moves at a speed of 0.900c. If its length is L as measured by an observer on the...

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Concept explainers

Proper Length

The theory of special relativity explains the connection between space and time to objects that move in a straight line at a constant speed. The objects move at the speed of light. When an object approaches light speed, its mass is endless and cannot move faster than light. The most crucial postulate of Einstein's special relativity is that the laws of nature do not change in each frame of reference.

Question

A spacecraft with length 100 meters passes an observer on earth. The observer measures the passing spacecraft
to be 80 meters long. What is the velocity of the rocket the reference frame of the Earth-based observer?
O 0.3c
O 0.8c
O 0.6c
O 0.2c

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