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    (Original post by SophieBarlow87)
    This may be stupid but i thought there may have been a typo in the question, when calculating pq I did it in two steps, but tt was 7 marks so I tthought they may have wanted us to calculate the distance of that line. The more likely issue is that I did that one all wrong, how did you do it?
    I couldn't do it, but I realised afterwards you could let x=6+PQcos45 and y=PQsin45, and you plug that into projectile equation.
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    (Original post by C0balt)
    I couldn't do it, but I realised afterwards you could let x=6+PQcos45 and y=PQsin45, and you plug that into projectile equation.
    I did it like that too. Was that one 7 marks too?
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    (Original post by A Slice of Pi)
    I did it like that too. Was that one 7 marks too?
    Yup.

    What did you get for the second projectile question where the ball bounced off and landed beyond A and you had to find e<k where k is a constant?
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    The grade boundaries need to be as low as 2008, then I may have scraped an A. (48 for an A in 2008)
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    (Original post by C0balt)
    Yup.

    What did you get for the second projectile question where the ball bounced off and landed beyond A and you had to find e<k where k is a constant?
    I think I made a mistake on this. Mine involved tan... There was a similar one on June 2010 and its the very last question on that. I didn't finish Q6 (b) because I was pushed for time and moved on to the 8 marker
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    (Original post by A Slice of Pi)
    I think I made a mistake on this. Mine involved tan... There was a similar one on June 2010 and its the very last question on that. I didn't finish Q6 (b) because I was pushed for time and moved on to the 8 marker
    The projectile e<k (6b?) made me use like 4 numbers with loads of decimal places and I got the answer to be e<0.2 something which I am convinced is wrong because that was so messy. I gave up on Q7. I also messed up restitution (5b?). I got something similar to whatever they were trying to make us show but totally different at the same time. I wish we has 3 hours for that exam lol
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    (Original post by C0balt)
    The projectile e<k (6b?) made me use like 4 numbers with loads of decimal places and I got the answer to be e<0.2 something which I am convinced is wrong because that was so messy. I gave up on Q7. I also messed up restitution (5b?). I got something similar to whatever they were trying to make us show but totally different at the same time. I wish we has 3 hours for that exam lol
    I think mine ended up as 0.2... something too. It makes me wonder if they've tested that paper to see if the allotted time is enough.
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    Worst exam ever

    Did anyone get an answer for the bearing in the last part of the last question? I got 024, no idea if it's right
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    (Original post by A Slice of Pi)
    I think mine ended up as 0.2... something too. It makes me wonder if they've tested that paper to see if the allotted time is enough.
    Even if I knew what I was doing for every question I'd have taken like 1.25 hrs doing the algebra you know 😂
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    (Original post by C0balt)
    I couldn't do it, but I realised afterwards you could let x=6+PQcos45 and y=PQsin45, and you plug that into projectile equation.
    Yeah, that's what I did, then I got a quadratic for PQ. Not sure whether I got the right answer though!
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    (Original post by C0balt)
    Even if I knew what I was doing for every question I'd have taken like 1.25 hrs doing the algebra you know 😂
    I knew the methods for all the questions but still made silly mistakes. So much trig in there too...
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    (Original post by CMP100Em)
    Worst exam ever

    Did anyone get an answer for the bearing in the last part of the last question? I got 024, no idea if it's right
    I didn't get 24, but all the clever (aka Oxbridge bound) people in my exam did, so it's probably right.


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    (Original post by A Slice of Pi)
    I did it like that too. Was that one 7 marks too?
    Did you actually managed to get PQ then? I did it that way, but must have screwed up the algebra somewhere because my answers kept coming out wrong


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    (Original post by aoxa)
    Did you actually managed to get PQ then? I did it that way, but must have screwed up the algebra somewhere because my answers kept coming out wrong


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    I did. Whether it's right is another story. I know I made a silly mistake on Q7 (b) and couldn't finish 6 (b) in time
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    How many marks was finding the length PQ?
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    (Original post by CMP100Em)
    How many marks was finding the length PQ?
    Seven
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    (Original post by C0balt)
    I couldn't do it, but I realised afterwards you could let x=6+PQcos45 and y=PQsin45, and you plug that into projectile equation.
    Thats what i did but it took me seconds and about threelines and i dont think it was worth 7 marks.
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    Has anyone got any predictions on grade boundaries?
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    (Original post by C0balt)
    I couldn't do it, but I realised afterwards you could let x=6+PQcos45 and y=PQsin45, and you plug that into projectile equation.
    Oh is this how you do it? in the question it said it was travelling horizontally so i set the final speed (in y direction) to be 0 and found the vertical distance, then used trig to find PQ, has this method got any merit at all or have i just made it up? hahaha
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    (Original post by aoxa)
    I didn't get 24, but all the clever (aka Oxbridge bound) people in my exam did, so it's probably right.


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    I'm assuming they had no problems with the rest of the paper?
 
 
 
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