Momentum Equation | Tricia's Question

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Discussion Overview

The discussion centers around the equation for momentum, exploring its definition and relationship to force and impulse. Participants examine the mathematical expressions and conceptual understanding of momentum in the context of physics.

Discussion Character

  • Exploratory, Technical explanation, Debate/contested

Main Points Raised

  • One participant states that momentum is defined as mass multiplied by velocity.
  • Another participant suggests that momentum can be expressed as the rate of change of force, linking it to the equation for force and acceleration.
  • A different participant reiterates that momentum equals force multiplied by time, but this is challenged as being more accurately described as impulse or change in momentum.
  • Some participants clarify that while momentum can be related to force and time, the distinction between momentum and impulse is important, with impulse defined as the change in momentum over a time interval.

Areas of Agreement / Disagreement

Participants express differing views on the relationship between momentum and impulse, with no consensus reached on the definitions and equations involved.

Contextual Notes

The discussion includes various interpretations of momentum and impulse, highlighting the need for clarity in definitions and the potential for confusion in their mathematical representations.

lpfan4yrs04
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what is the equation for momentum?
 
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answer

mass * velocity = momentum
 
Momentum is also the rate of change of force. This can easily be verified by rearranging the equations:

force = mass * acceleration

acceleration = velocity / seconds

momentum = mass * velocity,

Therefore:

momentum = force * seconds

Edited typo.

Integral
 
Last edited by a moderator:
momentum = force x seconds
 
Originally posted by Michael D. Sewell
momentum = force x seconds

That's impulse, or change in momentum.
 
Originally posted by xeguy
That's impulse, or change in momentum.
That depends. At an instantaneous point, it is momentum. But Delta Momentum = Force * Delta Time, that is impulse.
 

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