Discovering Intuitive Velocity: Methods for Estimating Acceleration and Distance

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SUMMARY

This discussion focuses on intuitive methods for estimating acceleration and distance, emphasizing the relativity of velocity. It establishes that velocity can only be judged relative to a stationary reference point, such as the ground while walking or driving. The conversation also explores the concept of using redshift from a MBR (Microwave Background Radiation) reference point to potentially measure absolute velocity. Additionally, it questions whether there exists a theoretical physical space where acceleration is considered relative.

PREREQUISITES
  • Understanding of basic physics concepts such as velocity, acceleration, and displacement.
  • Familiarity with the concept of reference frames in physics.
  • Knowledge of redshift and its implications in astrophysics.
  • Basic comprehension of the Microwave Background Radiation (MBR) in cosmology.
NEXT STEPS
  • Research the principles of reference frames in classical mechanics.
  • Explore the concept of redshift and its applications in measuring cosmic distances.
  • Investigate the implications of the Microwave Background Radiation on cosmological models.
  • Study the theories surrounding absolute versus relative motion in physics.
USEFUL FOR

Students of physics, astrophysicists, and anyone interested in the fundamental concepts of motion and reference frames in the universe.

Loren Booda
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One may estimate acceleration by the force one experiences.

One may judge distance by several methods - such as parallax, focus, and sound/sight divergence.

What, however, is the most direct means of sensing one's velocity intuitively?
 
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Since velocity is only relative, the only way to judge velocity is relative to something that is "stationary". For example, you can get your velocity relative to the street when walking or riding in a car.
 
Then I guess displacement is also relative (the tests I mentioned for it being indirect), whereas acceleration is not.

If we were able to detect object redshift from an unshifted MBR reference point, would that provide an absolute (as opposed to relative) measure of velocity?

Is there a theoretical physical space where acceleration is relative in general?
 

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