Year 11 2014 Chat :) (25 Viewers)

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turnerloos

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How come you only have 11 units in your signature for your preliminary subjects?
Cause 12 units is too mainstream.

jokes. I do catholic studies and dat doesnt count towards an atar so i didnt add it to my sig. (not sure if it was a bad idea to drop sor for catholic studies...)
 

justem

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Night guys :) thank god tomorrow is Friday
 

J280

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Guys I need help with a physics question (relative velocity)

Two trains are passing each other. Train A is moving east at 13 m/s, train B travelling west at 28 m/s.
a) What is the velocity of train A relative to train B?
b) What is the velocity of train B relative to train A?

Sorry I just don't get it :/
 

anomalousdecay

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Guys I need help with a physics question (relative velocity)

Two trains are passing each other. Train A is moving east at 13 m/s, train B travelling west at 28 m/s.
a) What is the velocity of train A relative to train B?
b) What is the velocity of train B relative to train A?

Sorry I just don't get it :/
Put them into vector components, so that you set one direction as positive, one direction as negative.

So a) asks us to put it into relative terms of train B. So we assign the direction of train B as positive (west). Now since train A is moving east at 13 m/s, we can say that it is travelling -13 m/s west.

To find the velocity of train A relative to B, we must find the difference in velocity. So we do:



Notice that to find the difference, you have to take away the velocity of one from the other.


Do b) and you should get this by using the same method:

 
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J280

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Put them into vector components, so that you set one direction as positive, one direction as negative.

So a) asks us to put it into relative terms of train B. So we assign the direction of train B as positive (west). Now since train A is moving east at 13 m/s, we can say that it is travelling -13 m/s west.

To find the velocity of train A relative to B, we must find the difference in velocity. So we do:



Notice that to find the difference, you have to take away the velocity of one from the other.


Do b) and you should get this by using the same method:

Thank you so much.. you are a lifesaver :)
Better get to sleep soon lol
 

justem

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Morning people
I can barely keep my eyes open
 

hawkrider

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So.... This weekend homework wise I have 2U, 3U maths textbook work, I need to finish an assignment for biology, got to do some practice tests on the symbols for chemistry, I have to do multiple choice questions and skills from the textbook for economics, and I need to compose a creative writing piece on my AOS.

If I'm done with all with those, I might make syllabus dot point notes for chemistry, biology and economics.

Man, the workload is piling up really fast. :(
 

studynerd

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Has anyone started to make some meaning full notes for their mid term exam?

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justem

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Has anyone started to make some meaning full notes for their mid term exam?

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Yeah mostly on the weekends.
Weekend homework: 15 exercises for math , chem report, bio report, 5 bio worksheets, start English portfolio, 2 English adv analysis sons extension English research + notes
Fun :)
 

hawkrider

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Yeah mostly on the weekends.
Weekend homework: 15 exercises for math , chem report, bio report, 5 bio worksheets, start English portfolio, 2 English adv analysis sons extension English research + notes
Fun :)
:O crap, that's more than mine!
 
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