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I don't know what your talking about you are obviously delusional, I solved it then they solved it using special relativity(http://www.scienceforums.com/topic/36528-questions-to-special-relativity and http://www.sciforums.com/threads/a-story-about-special-relativity-who-can-explain-it%EF%BC%9F.162954/).

First scene:

<--A----------------------------------Earth---------------------------------------B--->

-0.9C............................................................................................................0.9C

Please answer the relative speed between A and B .

 

Second scene:

Earth---------------------------------------A--->

----------------------------------------------B--->

.............................................................0.9C

Please answer the relative speed between A and B .

 

Third scene:

Earth---------------------------------------A--->

.|....................................................0.9C

.|

.|

.|

.|

\/ B 0.9C

Please answer the relative speed between A and B .

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Time to move this to alternate theories.

I don't judge a thing in general as right or wrong. I will analyze and ask questions one by one, waiting for the other party to answer.OK, let's continue to discuss it in depth. I hope our discussion

I did notice your red stamp in this thread.   I didn't remove it. :)

Posted Images

First scene:

<--A----------------------------------Earth---------------------------------------B--->

-0.9C............................................................................................................0.9C

Please answer the relative speed between A and B .

 

Second scene:

Earth---------------------------------------A--->

----------------------------------------------B--->

.............................................................0.9C

Please answer the relative speed between A and B .

 

Third scene:

Earth---------------------------------------A--->

.|....................................................0.9C

.|

.|

.|

.|

\/ B 0.9C

Please answer the relative speed between A and B .

You are following the same path as ralfcis, ralfcis already asked this question in (http://www.scienceforums.com/topic/35098-relativity-and-simple-algebra/). The answer is your add the gamma's to find the speed or use the equation r= x+ y+ z2

 

1) A and B are traveling at γaγ or it's around like .995C

2) They are again traveling γa * γb or like 0C

3) They are traveling at γfγx2 + γy2   or ‭.994C

Edited by VictorMedvil
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Posted (edited)

You are following the same path as ralfcis, ralfcis already asked this question in (http://www.scienceforums.com/topic/35098-relativity-and-simple-algebra/). The answer is your add the gamma's to find the speed or use the equation r= x+ y+ z2

 

1) A and B are traveling at γaγ or it's around like .995C

2) They are again traveling γa * γb or like 0C

3) They are traveling at γfγx2 + γy2   or ‭.933C

Can you explain the calculation process of ‭ 0.933C? What's the specific data?

 

Janus told me it is like this  w = (u+v)/(1+uv/c^2),  You told me it is γfγx2 + γy2

Edited by TonyYuan2020
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Posted (edited)

They both yield the same answer.

Can you write down the specific operation steps? This is very important.

 w = (u+v)/(1+uv/c^2), here u=? v=? 

 

Janus's answer of first question: (0.9c+0.9c)/(1+ 0.9c(0.9c)/c^2) = ~0.9945c

when i ask second question, he hasn't given an answer yet.

 

Third question:

Your answer is 0.933C, can you write out the calculation process?

Edited by TonyYuan2020
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Posted (edited)

It was a typo, it was .994, i just rounded incorrectly.

 

First scene:

<--A----------------------------------Earth---------------------------------------B--->

-0.9C............................................................................................................0.9C

Please answer the relative speed between A and B .    Victor's answer is 0.9945C.

 

Second scene:

Earth---------------------------------------A--->

----------------------------------------------B--->

.............................................................0.9C

Please answer the relative speed between A and B .   Victor's answer is 0C.

 

 

Third scene:

Earth---------------------------------------A--->

.|....................................................0.9C

.|

.|

.|

.|

\/ B 0.9C

Please answer the relative speed between A and B .    Victor's answer is 0.9945C.

 

Fourth scene:

Earth---------------------------------------A--->

.。|....................................................0.9C

.。。|

.。。。|

.。。。。|

.。。。。。|

..................._/   B 0.9C    The angle is 45 degrees

Please answer the relative speed between A and B . 

Edited by TonyYuan2020
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First scene:

<--A----------------------------------Earth---------------------------------------B--->

-0.9C............................................................................................................0.9C

Please answer the relative speed between A and B .    Victor's answer is 0.9945C.

 

Second scene:

Earth---------------------------------------A--->

----------------------------------------------B--->

.............................................................0.9C

Please answer the relative speed between A and B .   Victor's answer is 0C.

 

 

Third scene:

Earth---------------------------------------A--->

.|....................................................0.9C

.|

.|

.|

.|

\/ B 0.9C

Please answer the relative speed between A and B .    Victor's answer is 0.9945C.

 

Fourth scene:

Earth---------------------------------------A--->

.。|....................................................0.9C

.。。|

.。。。|

.。。。。|

.。。。。。|

..................._/   B 0.9C    The angle is 45 degrees

Please answer the relative speed between A and B . 

 

You aren't going to get different answers the more complex you make it, special relativity is correct. I don't feel like doing that situation as it would require doing alot of alegbra to find the velocities between those object as you would have to take in account alot of trigonometry, but something like this 

γf = (γax - γbx(component))2γby(component)2

Edited by VictorMedvil
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You aren't going to get different answers the more complex you make it, special relativity is correct. I don't feel like doing that situation as it would require doing alot of alegbra to find the velocities between those object as you would have to take in account alot of trigonometry.

 

Third scene:

Earth---------------------------------------A--->

.|....................................................0.9C

.|

.|

.|

.|

\/ B 0.9C

Please answer the relative speed between A and B .    Victor's answer is 0.9945C.

 

But According to special relativity, the answer should be u=21/2/2 * 0.9c, v=21/2​/2 * 0.9c, the last answer is 0.906C.

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Third scene:

Earth---------------------------------------A--->

.|....................................................0.9C

.|

.|

.|

.|

\/ B 0.9C

Please answer the relative speed between A and B .    Victor's answer is 0.9945C.

 

But According to special relativity, the answer should be u=21/2/2 * 0.9c, v=21/2​/2 * 0.9c, the last answer is 0.906C.

 

Like I have said many times Newtonian physics is wrong, learn to stop using it, those aren't velocities they are Gammas γ.

Edited by VictorMedvil
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Like I have said many times Newtonian physics is wrong, learn to stop using it, those aren't velocities they are Gammas γ.

According to this theory, A and B go far away from each other. With A as the reference, B's time goes slower, and with B as the reference, A's time goes slower. We'll never know who's slower. When they meet, please tell me whose time is slower? Crazy relativity.

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