The third law

[jajrussel]

For every action there is an opposite and equal action. Do both occur at the same time? If we observe the effect left right, up down, etc at exactly the same time in a vacuum (meaning all directions all resistance being equal) is there any reason why our measurements should differ by anything other than direction? If there is an initial need for an exchange of information. I'm assuming there is initially.

The first law seems to indicate that only the initial need for an information exchange is needed without regard to the final distance when measured. So if two people measure the effect years later at exactly the same time the only difference in their measure should be direction. So if we compare notes, it would seem to me that there are certain measures that c have no effect on. Does the first law server the need for information exchange?

 

[Strange]

10 minutes ago, jajrussel said:

For every action there is an opposite and equal action. Do both occur at the same time?

Yes. If you push something, it pushes back (at the same time).

I don't think I understand the rest of your questions ...

[jajrussel]

16 minutes ago, Strange said:

Yes. If you push something, it pushes back (at the same time).

I don't think I understand the rest of your questions ...

I'll try to clarify. A and B are equal. Initial act results in A going left, while B goes right. It's now been clarified that the event starts for both at the same time. So, in a sense there is an exchange of information between A and B at the initial time of the act. It seems to me that the first law says that no further exchange of information is needed between A and B. Is this correct?

Edited May 3, 2018 by jajrussel
You'll have to ask Gboard

[Doozel]

15 minutes ago, jajrussel said:

I'll try to clarify. A and B are equal. Initial act results in A going left, while B goes right. It's now been clarified that the event starts for both at the same time. So, in a sense there is an exchange of information between A and B at the initial time of the act. It seems to me that the first law says that no further exchange of information is needed between A and B. Is this correct?

I assume that with initial act you mean the collision between the two objects? I'm not sure what the information is needed for after the impact, but once (assuming there are no other forces involved) they are moving again at a constant speed, they are not acting upon each other anymore.

Edited May 3, 2018 by Doozel

[jajrussel]

41 minutes ago, Doozel said:

I assume that with initial act you mean the collision between the two objects? I'm not sure what the information is needed for after the impact, but once (assuming there are no other forces involved) they are moving again at a constant speed, they are not acting upon each other anymore.

It kinda requires a central point initially to remain simple. Two different observers measure at the same time. The only difference in measure is direction L/R, up or down.

Another thread sparked the thought. I was trying to think of an event where two different people could take a measure at the same time that was of the same event where the only difference in measure is direction regardless the distance between the event being observed. One is the mirror image of the other.

 

Edited May 3, 2018 by jajrussel
I'm confused

[swansont]

2 hours ago, jajrussel said:

 The first law seems to indicate that only the initial need for an information exchange is needed without regard to the final distance when measured. So if two people measure the effect years later at exactly the same time the only difference in their measure should be direction. So if we compare notes, it would seem to me that there are certain measures that c have no effect on.  

The information can't travel faster than c. It can travel slower. 

The information exchange would happen at the time of the collision or interaction. Afterward, the objects would travel in a straight line at constant v, in accordance with Newton's first law. No further exchange of information is needed to do that.

[Bender]

2 hours ago, jajrussel said:

It kinda requires a central point initially to remain simple. Two different observers measure at the same time. The only difference in measure is direction L/R, up or down.

Another thread sparked the thought. I was trying to think of an event where two different people could take a measure at the same time that was of the same event where the only difference in measure is direction regardless the distance between the event being observed. One is the mirror image of the other.

 

If you use a medium, such as a long rod, to do the force measurements at a distance  (is that what you are getting at?), a pressure wave carries the information and is bound by the speed of sound in the medium.

[MigL]

Momentum is a conserved quantity ( due to symmetry considerations ), initially, as well as any time subsequent.