# Vectors

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Thread starter 3 months ago
#1
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3 months ago
#2
Can you upload your attempt and describe what you are confused about?
Pls try and do this in the OP in future?
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3 months ago
#3
(Original post by Matheen1)
...

Please familiarise yourself with the posting guidelines - here - before continuing to post on this forum.
Last edited by ghostwalker; 3 months ago
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Thread starter 3 months ago
#4
(Original post by mqb2766)
Can you upload your attempt and describe what you are confused about?
Pls try and do this in the OP in future?
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3 months ago
#5
(Original post by Matheen1)
And what are you confused about?
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Thread starter 3 months ago
#6
How to work out b and c.
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3 months ago
#7
(Original post by Matheen1)
How to work out b and c.
I guessed that. I was asking about what mathematical difficulty you had. For b) why does this mean they're parallel?
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Thread starter 3 months ago
#8
(Original post by mqb2766)
I guessed that. I was asking about what mathematical difficulty you had. For b) why does this mean they're parallel?
I wasn’t sure how to solve k so I need help on where to start with b.
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3 months ago
#9
(Original post by Matheen1)
I wasn’t sure how to solve k so I need help on where to start with b.
Youve written that the two vectors are equal. What does parallel mean - do you have a textbook?
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Thread starter 3 months ago
#10
(Original post by mqb2766)
Youve written that the two vectors are equal. What does parallel mean - do you have a textbook?
That they have the same direction.
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3 months ago
#11
(Original post by Matheen1)
That they have the same direction.
and you represent that mathematically as ....
Do you have a textbook?
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Thread starter 3 months ago
#12
(Original post by mqb2766)
and you represent that mathematically as ....
Do you have a textbook?
Yeah I have a textbook.
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3 months ago
#13
(Original post by Matheen1)
Yeah I have a textbook.
and what does it say about parallel vectors?
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Thread starter 3 months ago
#14
(Original post by mqb2766)
and what does it say about parallel vectors?
That they have the same direction but not magnitude
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3 months ago
#15
(Original post by Matheen1)
That they have the same direction but not magnitude
So how do you represent that mathematically for this question part?
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Thread starter 3 months ago
#16
(Original post by mqb2766)
So how do you represent that mathematically for this question part?
To find direction you have to use trigonometry and to find magnitude you have to use pythag
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3 months ago
#17
(Original post by Matheen1)
To find direction you have to use trigonometry and to find magnitude you have to use pythag
Id strongly suspect your textbook has an example for parallel vectors like
https://www.youtube.com/watch?v=f1_n...hannel=TLMaths

You don't need to use trig, but you can simply think about the component ratio.

As usual, like the video, a sketch usually helps.
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Thread starter 3 months ago
#18
(Original post by mqb2766)
Id strongly suspect your textbook has an example for parallel vectors like
https://www.youtube.com/watch?v=f1_n...hannel=TLMaths

You don't need to use trig, but you can simply think about the component ratio.

As usual, like the video, a sketch usually helps.
I’ve watched the video thanks. I’m still unsure of where to start though so is it okay if you can walk me through it?
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3 months ago
#19
(Original post by Matheen1)
I’ve watched the video thanks. I’m still unsure of where to start though so is it okay if you can walk me through it?
There must be an example in your textbook, there are certainly plenty on google. As per the first few replies in this and other threads, you're expected to show some effort to form/solve the problem first.

So how do you adapt the video to your problem (or use the component ratio) to show that the two given vectors are parallel? Or if you sketched the vectors, where does the solution lie and how do you sovle it. Pls upload some form of attempt. This is #19, I cant keep asking.
Last edited by mqb2766; 3 months ago
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