Mechanics: Why Velocity Matters for Rough Plane Deceleration

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Discussion Overview

The discussion revolves around the role of velocity in determining deceleration when an object is projected up a rough plane. Participants explore the relationship between velocity, force, and deceleration, considering different contexts such as friction and drag forces.

Discussion Character

  • Exploratory, Technical explanation, Debate/contested

Main Points Raised

  • Some participants question why velocity is not considered when calculating deceleration for an object moving up a rough plane.
  • One participant emphasizes that velocity and acceleration (deceleration) are distinct concepts.
  • Another participant inquires whether velocity influences the magnitude of the force acting on the object.
  • It is noted that for a constant coefficient of kinetic friction, velocity does not affect the magnitude of the force.
  • A participant mentions that in the case of an object moving through air, the drag force is dependent on velocity.

Areas of Agreement / Disagreement

Participants express differing views on the relevance of velocity in the context of deceleration and force, indicating that multiple competing perspectives exist without a clear consensus.

Contextual Notes

The discussion does not resolve the assumptions regarding the conditions under which velocity may or may not affect deceleration and force, particularly in varying contexts such as friction and drag.

Kajan thana
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If an object is is projected up a rough plane with a velocity. Why don't we take the velocity into account when we are finding out the deceleration?
 
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Kajan thana said:
If an object is is projected up a rough plane with a velocity. Why don't we take the velocity into account when we are finding out the deceleration?
Velocity and acceleration (deceleration) are totally different things.
 
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my question is does the velocity affect the magnitude of the force
 
Kajan thana said:
my question is does the velocity affect the magnitude of the force

Not for a constant coefficient of kinetic friction.

If you have something moving through air, then the DRAG force is velocity dependent.

Zz.
 

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