Addition of velocities. relativity.

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SUMMARY

The discussion focuses on the relativistic addition of velocities, specifically demonstrating three key properties: (a) if velocity V is less than the speed of light (c) in one inertial frame, it remains less than c in all inertial frames; (b) if V equals c in one frame, it equals c in all frames; and (c) if V exceeds c in one frame, it exceeds c in all frames. The relevant equation used is Vx' = (Vx - c) / (1 - vVx/c²), which is essential for these calculations. The participants are seeking clarification on parts (a) and (c) of the problem.

PREREQUISITES
  • Understanding of special relativity principles
  • Familiarity with inertial frames of reference
  • Knowledge of the speed of light as a universal constant
  • Ability to manipulate algebraic equations involving velocities
NEXT STEPS
  • Study the implications of the Lorentz transformation
  • Explore the concept of simultaneity in different inertial frames
  • Learn about the consequences of velocities approaching the speed of light
  • Investigate the physical meaning of relativistic effects on time and space
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Students of physics, educators teaching special relativity, and anyone interested in understanding the fundamental principles of velocity addition in the context of relativity.

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Homework Statement


Show that the addition of velocities implies that:
a)if V < c in any inertial frame, then V < c in any other.
b)If V=c in one inertial frame, then V=c in the other.
c)If V>c in any inertial frame, then V>c in any other inertial frame.

Homework Equations



Vx'=(Vx-c)/(1-vVx/c^2)


The Attempt at a Solution


I did b) and I can't do a) and c)
 
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Show us what you tried for part a.
 

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