About acceleration and mass....

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    Acceleration Mass
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Discussion Overview

The discussion revolves around the relationship between mass, acceleration, and distance traveled by objects under the influence of forces. Participants explore concepts related to Newton's laws of motion, particularly focusing on how different masses behave when subjected to the same forces and accelerations, as well as the effects of friction and air resistance.

Discussion Character

  • Technical explanation
  • Debate/contested
  • Conceptual clarification

Main Points Raised

  • Some participants assert that lighter objects with smaller inertia accelerate faster than heavier objects when the same force is applied.
  • There is a correction regarding the understanding of acceleration and deceleration, with some participants stating that lighter masses decelerate faster.
  • A question is raised about which object would travel farther before stopping when both experience the same acceleration but are subjected to different forces.
  • One participant references Galileo's experiment, noting that two different masses in free fall experience different forces but have the same acceleration, leading to the conclusion that they hit the ground at the same time and thus do not travel farther in the same time frame.
  • Another participant mentions the potential impact of air resistance on the motion of the objects, suggesting it could alter the outcomes discussed.

Areas of Agreement / Disagreement

Participants express differing views on the relationship between mass, acceleration, and distance traveled. While some corrections are made regarding acceleration and deceleration, the discussion remains unresolved regarding the implications of these concepts in practical scenarios, particularly concerning the effects of friction and air resistance.

Contextual Notes

Some assumptions about the conditions of the experiments and the effects of external forces like friction and air resistance remain unaddressed, leading to potential limitations in the conclusions drawn from the discussion.

Sundown444
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Now, if I recall correctly, lighter objects with smaller inertia do go faster in terms of acceleration and farther than objects with heavier mass or inertia when the same force is exerted on them. But what about same accelerations? If a light object and a heavy object were to undergo the same accelerations even though they are exerted upon by different forces, which one would go farther before stopping whether by friction or something else exerting the same amount of force on both of them into stop them?
 
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Sundown444 said:
if I recall correctly, lighter objects with smaller inertia do go faster and farther than objects with heavier mass or inertia when the same force is exerted on them
You don't recall correctly. They accelerate faster according to Newton 2: F = m##\times##a

And, conversely, they decelerate slower [edit] oops: faster , which answers your
Sundown444 said:
which one would go farther before stopping whether by friction or something else exerting the same amount of force on both each of them
 
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BvU said:
You don't recall correctly. They accelerate faster according to Newton 2: F = m##\times##a

And, conversely, they decelerate slower, which answers your

For the first part, so I made a small error. I did mean they accelerate faster rather than go faster, but I didn't think it would matter either way I put it. I can see I was wrong, but with what I was thinking, what I actually said aside, I was technically not incorrect, if you know what I mean.

Still, which one decelerates slower, both of them?
 
I goofed too: lighter masses decelerate faster. The acceleration and the force simply point in the other direction
 
Sundown444 said:
But what about same accelerations? If a light object and a heavy object were to undergo the same accelerations even though they are exerted upon by different forces, which one would go farther before stopping whether by friction or something else exerting the same amount of force on both of them into stop them?
Galileo supposedly did that experiment 400 years ago. Two different masses in free fall experience different forces but have the same acceleration, ##g##. The kinematic equations that we now know predict that the two masses will hit the ground at the same time. This means that neither goes farther in the same amount of time.
 
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kuruman said:
Galileo supposedly did that experiment 400 years ago. Two different masses in free fall experience different forces but have the same acceleration, ##g##. The kinematic equations that we now know predict that the two masses will hit the ground at the same time. This means that neither goes farther in the same amount of time.

Unless air resistance is there and affects the motion of the object. Otherwise, got it. That helped really well, thanks.
 

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