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    I'll be posting model answers tomorrow
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    Does anyone know what 3 & 7a were worth? I got 7a completely wrong and I got the acceleration of 3 but didn't get the right speed.
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    (Original post by G4slyness)
    It was I = M(V - U)
    M was 0.4, V = +/-3.5 and U = -/+4 (depending on which direction you defined as positive)

    I = 0.4 (3.5 - -4) or 0.4 (-3.5 - 4)
    = 0.4 * 7.5 or 0.4 * -7.5
    = 3 Ns
    I got V wrong because I accidentally missed out g after rearranging to get a.

    Otherwise, my working out was correct. How many marks do you reckon I'd lose?
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    If i used 0.5 for the mass for the acceleration instead of 1.5 would i get working
    I wrote R=1.5g +0.5*0.5
    instead of 1.5g+1.5*0.5

    would i get a mark for showing the correct method?
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    (Original post by ayemayfriday)
    Does anyone know what 3 & 7a were worth? I got 7a completely wrong and I got the acceleration of 3 but didn't get the right speed.
    They were both worth 7 marks
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    ****ed up on the first question I said the i component was equal..
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    (Original post by xx_lofsuburbia)
    I got V wrong because I accidentally missed out g after rearranging to get a.

    Otherwise, my working out was correct. How many marks do you reckon I'd lose?
    I'll recon for just the acceleration right that will not be about 2 marks max
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    So i messed up on the Train question and that vector question. I used triangles for the vector question and got 5√2/2 (i + j). I dont know how many marks id get for that out of 7? The actual answer was 5/2 (i+j)
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    If u don't take direction into account for the impulse question, you make the mistake of getting 0.2 and not 3, but I think u will only lose 1 mark for that.
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    (Original post by Formless)
    Cheers absolute legends. How many marks for 0.2 you think?
    if you showed all your working you should get 5/7. You'll drop an M1 for incorrect equation and A1 for wrong answer
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    I got d=1.6 and M=66. I dont see how thats wrong
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    I put southwest for the Direction for 8b?? surely this is right
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    in dont get how the coff of friction was 0.73, I got 0.96
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    Same I was thinking about whether to put 45 degrees or south west
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    (Original post by stephencurtis)
    I accidentally did one of the questions in pencil :/, marks or no?
    Yes you will.
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    (Original post by gunners98)
    if you showed all your working you should get 5/7. You'll drop an M1 for incorrect equation and A1 for wrong answer
    Cheers mate, any suggestion on the boundaries, im thinking 59-61ish?
    if so i could be in line for 100ums
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    (Original post by jenny01)
    I got that too, did anyone else?
    So did I

    Posted from TSR Mobile
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    Any suggestions on the the A boundary?
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    I have no idea what question 7a) was asking but I drawn a graph with know calculate degree from the vector( ~26 , ~64 and ~90) with root 5 from (-i,2j), and I gusee the F2 is 4.3 something
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    (Original post by jenny01)
    I got that too, did anyone else?
    yaaaaaas
 
 
 
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