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    Any help would be appreciated
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    (Original post by FaZe Temperrr)
    Any help would be appreciated
    Help with what? You've posted a lot of questions there.

    Please choose a part and show us your working and thoughts / explain why you're stuck.
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    (Original post by notnek)
    Help with what? You've posted a lot of questions there.

    Please choose a part and show us your working and thoughts / explain why you're stuck.
    I'm struggling with all of it to be honest.

    Thanks
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    (Original post by notnek)
    Help with what? You've posted a lot of questions there.

    Please choose a part and show us your working and thoughts / explain why you're stuck.
    help with question 3 particularly would be great. Thanks
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    (Original post by FaZe Temperrr)
    help with question 3 particularly would be great. Thanks
    The boat is north of the buoy when both position vectors have the same i component (draw a diagram if this isn't clear).

    Does this help?
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    (Original post by notnek)
    The boat is north of the buoy when both position vectors have the same i component (draw a diagram if this isn't clear).

    Does this help?
    so would it be...

    1+3t=7
    3t=6
    t=2

    thanks
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    (Original post by FaZe Temperrr)
    so would it be...

    1+3t=7
    3t=6
    t=2

    thanks
    Yes that's correct.
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    (Original post by notnek)
    Yes that's correct.
    okay thanks for your help. For the b and c parts which components would be the same? Thanks
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    (Original post by notnek)
    Yes that's correct.
    Would you mind giving me some help on Q3 b and c, and Q4 d. Would really appreciate it. Thanks
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    (Original post by FaZe Temperrr)
    Would you mind giving me some help on Q3 b and c, and Q4 d. Would really appreciate it. Thanks
    I think you can do 3b yourself. Draw a diagram with one vector east of another - what can you say about their components? The thinking is similar to part a.

    3c is harder but a diagram will help. You need a diagram with the origin and the position vector of the sandbank. Then show on your diagram where the boat could lie if the sandbank is north-west of it.

    You need to use your diagram to work out the vector that goes from the boat to the sandbank. This vector is in the north-west direction so must have the form -ki + kj.

    If you're stuck then this is going to be tough to explain on an internet forum. It would helo if you post any diagram that you're drawn.
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    (Original post by notnek)
    I think you can do 3b yourself. Draw a diagram with one vector east of another - what can you say about their components? The thinking is similar to part a.

    3c is harder but a diagram will help. You need a diagram with the origin and the position vector of the sandbank. Then show on your diagram where the boat could lie if the sandbank is north-west of it.

    You need to use your diagram to work out the vector that goes from the boat to the sandbank. This vector is in the north-west direction so must have the form -ki + kj.

    If you're stuck then this is going to be tough to explain on an internet forum. It would helo if you post any diagram that you're drawn.
    Okay thanks, I think I have managed to do that. Any tips for question 4 part d? Thanks
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    (Original post by FaZe Temperrr)
    Okay thanks, I think I have managed to do that. Any tips for question 4 part d? Thanks
    Can you please post your answer for 4c?
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    (Original post by notnek)
    Can you please post your answer for 4c?
    Not sure if its correct or not
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    (Original post by FaZe Temperrr)
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    Not sure if its correct or not
    Yes that's correct for the position vector of the boat.

    If the boat is to collide with the lighthouse, there will be a time when the position vector of the boat is equal to 25i+23j.To find the this time you can set the i component of the boat equal to 25. Then verify that the time you get gives you a j component of 23.
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    (Original post by notnek)
    Yes that's correct for the position vector of the boat.

    If the boat is to collide with the lighthouse, there will be a time when the position vector of the boat is equal to 25i+23j.To find the this time you can set the i component of the boat equal to 25. Then verify that the time you get gives you a j component of 23.
    Okay cheers mate, really appreciate your help
 
 
 
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