What is easier to measure, angle or velocity?

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    Angle Measure Velocity
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Discussion Overview

The discussion revolves around the comparative ease of measuring angles versus velocities, particularly in different contexts such as on Earth versus in space. Participants explore the implications of reference points and the definitions of angular and tangential velocity.

Discussion Character

  • Debate/contested

Main Points Raised

  • Some participants propose that measuring angles is generally easier on Earth due to the availability of reference points, but question how this applies in space where such references may be absent.
  • One participant notes that angles require two intersecting lines for measurement, suggesting a potential misunderstanding of the original question.
  • Another participant argues that measuring tangential velocity in space necessitates measuring angular velocity, indicating a relationship between the two measurements.
  • A different viewpoint suggests that tangential velocity can be determined by taking two snapshots over small time intervals and calculating the change in position divided by the time interval, implying a straightforward method for measurement.

Areas of Agreement / Disagreement

Participants express differing views on the ease of measuring angles versus velocities, particularly in the context of space. The discussion remains unresolved with multiple competing perspectives presented.

Contextual Notes

Some assumptions about the definitions of angular and tangential velocity are not explicitly stated, and the implications of reference points in measurement are not fully explored.

cchang1989
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In general, on earth, angle is easier to measure with a reference point, but what about measuring something in space (with no reference point?)
 
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Angle only makes sense if you have 2 intersecting lines. I'm not sure what you're asking here. This sounds like a linear algebra question.
 
If you're measuring something in space, you really can't measure somethings tangential velocity without measuring its angular velocity as far as I know.
 
Why? Take two snapshots in small time intervals and divide the change in position by the time interval.

You get tangential velocity by definition.
 

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