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    (Original post by Don Pedro K.)
    the one where the guy forgot the say which vector it was parallel to in the OP.
    A particle p moves with constant acceleration (-3i+j). At time t seconds, its velocity is v. When t = 0, v = 5i-3j. Find the value of t when P is moving parallel to the vector i.

    V = (5-3t)i + (t-3)j

    Parallel to i when j=0

    t-3 = 0

    t = 3
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    (Original post by Kamara7)
    And I literally find this out the day before the exam :lol: I probably would've lost a lot of unnecessary marks in the exam tomorrow if I didn't know this, I'll thank you again :adore: I hope there aren't any more of these subtleties I don't know about...
    triple check if the question is asking for acceleration or deceleration, velocity or speed.

    also if asking for direction of particle after colission, i dont 100% think you can say direction changed, i think you have to say something like its going the original direction of say b
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    (Original post by KloppOClock)
    A particle p moves with constant acceleration (-3i+j). At time t seconds, its velocity is v. When t = 0, v = 5i-3j. Find the value of t when P is moving parallel to the vector i.

    V = (5-3t)i + (t-3)j

    Parallel to i when j=0

    t-3 = 0

    t = 3
    Okay good I got that too Man, I've been doing M1 questions since like 9 this morning... THIS BETTER PAY OFF TOMORROW
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    (Original post by Don Pedro K.)
    Okay good I got that too Man, I've been doing M1 questions since like 9 this morning... THIS BETTER PAY OFF TOMORROW
    i hope so, ive literally done over 50 papers this past week :sleep:
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    Please could someone explain to me Solomon Paper H M1 question 7d? Thanks
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    (Original post by KloppOClock)
    i hope so, ive literally done over 50 papers this past week :sleep:
    #Dedicated4Life ahaha
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    (Original post by Don Pedro K.)
    #Dedicated4Life ahaha
    this is literally just the only exam ive revised for as ive failed my others lol
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    (Original post by KloppOClock)
    this is literally just the only exam ive revised for as ive failed my others lol
    Ahhh you don't know that for sure! Stay optimistic ^_^
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    (Original post by marethyu)
    Please could someone explain to me Solomon Paper H M1 question 7d? Thanks
    here is an example of calculating tension on a pulley, apply it to your question

    Name:  img020.jpg
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    the resultant of the tension of T bisects the top right angle. Resolve the force of T in "/" direction and times by 2 as there are two tensions acting on the pulley
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    which paper do u guys think is the hardest so far????
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    (Original post by Don Pedro K.)
    Ahhh you don't know that for sure! Stay optimistic ^_^
    its too late, i already looked at the unofficial mark schemes. Im just hoping everyone else fails so they bump up my grade
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    (Original post by pondsteps)
    which paper do u guys think is the hardest so far????
    Edexcel:

    Gold 5
    Jan 09
    June 09
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    (Original post by marethyu)
    Please could someone explain to me Solomon Paper H M1 question 7d? Thanks
    The force exerted on the pulley is the vector sum of the two tensions acting upon it. The tensions are equal in magnitude and 60 degrees round from each other so their resultant force will bisect the two tensions hence the 2Tcos30.
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    (Original post by KloppOClock)
    its too late, i already looked at the unofficial mark schemes. Im just hoping everyone else fails so they bump up my grade
    Ah right I see xD Well, as cruel as that is, fingers crossed?? hahaha
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    (Original post by Louiseelg0rt)
    Can someone explain why it cannot tilt about B for part (C)? Im confused because I thought both strings were meant to be taut Attachment 545553Attachment 545553545555
    I still don't understand how part d works...Anyone know?
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    hardest papers so far IAl included ?
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    (Original post by bulletman54)
    hardest papers so far IAl included ?
    Jan 09, Edexcel Gold paper 5, Jan 15 (IAL) (in my opinion)
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    https://docs.google.com/file/d/0B1Zi...UybDVnWm8/edit

    (Original post by bulletman54)
    hardest papers so far IAl included ?
    these grade boundaries should give you an idea on the difficulty on papers, the lower the harder.
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    (Original post by Don Pedro K.)
    Jan 09, Edexcel Gold paper 5, Jan 15 (IAL) (in my opinion)
    thanks
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    (Original post by KloppOClock)
    https://docs.google.com/file/d/0B1Zi...UybDVnWm8/edit



    these grade boundaries should give you an idea on the difficulty on papers, the lower the harder.
    thanks
 
 
 
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