Hey there! Sign in to join this conversationNew here? Join for free
    • Thread Starter
    Offline

    14
    ReputationRep:
    With it so close to the exam and me unable to find an M4 thread for this year I decided to create one.

    ***********
    Resources:
    Past Papers (and mark schemes!)
    madasmaths questions
    Specification
    ***********
    Well they aren't many resource are there...

    Well how's it going everyone?
    • Very Important Poster
    Online

    21
    ReputationRep:
    Very Important Poster
    physicsmaths

    anyone else?

    Good luck, crazy M4 people
    • Thread Starter
    Offline

    14
    ReputationRep:
    Thank you very much SeanFM. I am doing my AS's this year and I am not doing FP2 or FP3 this year so extra challenge but it is fun (well that's just because I'm crazy!).

    (Original post by SeanFM)
    physicsmaths

    anyone else?

    Good luck, crazy M4 people
    • Very Important Poster
    Online

    21
    ReputationRep:
    Very Important Poster
    (Original post by Cryptokyo)
    Thank you very much SeanFM. I am doing my AS's this year and I am not doing FP2 or FP3 this year so extra challenge but it is fun (well that's just because I'm crazy!).
    Wow, I don't know what M4 needs (maybe it's M5 that needs FP2/FP3 or whatever ) but good effort :borat:

    Here are some madasmaths resources that might be useful.
    • Thread Starter
    Offline

    14
    ReputationRep:
    (Original post by SeanFM)
    Wow, I don't know what M4 needs (maybe it's M5 that needs FP2/FP3 or whatever ) but good effort :borat:

    Here are some madasmaths resources that might be useful.
    Thanks very much. You do need to know some FP2 but I have covered that and thanks for the resources.
    Offline

    2
    ReputationRep:
    For anyone who might be struggling with relative motion (chapter 1), this girl helped me a lot:
    https://www.youtube.com/channel/UCNL...5AtQsvd94cf1sg
    • Thread Starter
    Offline

    14
    ReputationRep:
    I will have a look at that a bit later.
    (Original post by gagafacea1)
    For anyone who might be struggling with relative motion (chapter 1), this girl helped me a lot:
    https://www.youtube.com/channel/UCNL...5AtQsvd94cf1sg
    Offline

    1
    ReputationRep:
    Anyone feeling really uneasy about this?
    Offline

    19
    ReputationRep:
    Anyone? What did you get for k? K=1 anyone?
    Offline

    1
    ReputationRep:
    (Original post by oShahpo)
    Anyone? What did you get for k? K=1 anyone?
    yeah i got k=1 thank goodness i noticed the lines were parallel at the very end
    Offline

    19
    ReputationRep:
    (Original post by Synn)
    yeah i got k=1 thank goodness i noticed the lines were parallel at the very end
    Do you remember anything else? Did you get distance = 6 at question 4 or 3?
    Offline

    1
    ReputationRep:
    (Original post by oShahpo)
    Do you remember anything else? Did you get distance = 6 at question 4 or 3?
    i remember for 6 c) i ended up with somethng like

    (cos(x) = 0)

    (sin(x) = 5/6)

    i got some large number for 3b and i cant remember question 4 and 5. I wish they swapped one of them for a resisted motion question.
    Offline

    19
    ReputationRep:
    (Original post by Synn)
    i remember for 6 c) you ended up with somethng like

    (cos(x) = 0)

    (sin(x) = 5/6)

    i got some large number for 3b and i cant remember question 4 and 5. I wish they swapped one of them for a resisted motion question.
    Did you get tan theta = 1/root 5? That's question 2 I think or maybe 1
    Offline

    2
    ReputationRep:
    Unofficial Markscheme - Let me know if you spot any errors!
    1)1/root5
    2)k=1
    3)5root17 256 degrees 48.5m
    4)shown then 6
    5)shown then when t=pi/12 speed=U and distance travelled when they meet is (U/6)pi+3
    6)shown then sin(theta)=5/6 and it is stable as the second derivative equals 48lmg here
    Offline

    1
    ReputationRep:
    (Original post by oShahpo)
    Did you get tan theta = 1/root 5? That's question 2 I think or maybe 1
    Its question 1 and nope i am 99% sure i messed that question up. The part where sphere A turned an angle of 90 degrees got me, i think ill be happy if i got half the method marks for that question
    Offline

    19
    ReputationRep:
    (Original post by Synn)
    Its question 1 and nope i am 99% sure i messed that question up. The part where sphere A turned an angle of 90 degrees got me, i think ill be happy if i got half the method marks for that question
    Okay, how about the minimum distance between the girl and the car, did you get 48, or some similar number?
    I remember the small angle was 3.something.
    Offline

    1
    ReputationRep:
    (Original post by oShahpo)
    Okay, how about the minimum distance between the girl and the car, did you get 48, or some similar number?
    I remember the small angle was 3.something.
    i cant remember the answer to that question i remember the method i did though expressing them as position vectors and differentiating to get a minimum value of t. Somewhere along the lines of this anyway
    Offline

    0
    ReputationRep:
    (Original post by Ewanclementson)
    Unofficial Markscheme - Let me know if you spot any errors!
    1)1/root5
    2)k=1
    3)5root17 256 degrees 48.5m
    4)shown then 6
    5)shown then when t=pi/12 speed=U and distance travelled when they meet is (U/6)pi+3
    6)shown then sin(theta)=5/6 and it is stable as the second derivative equals 48lmg here
    I agree with all of it except number 6). The second derivative I got was 44lmg/3

    I would also like to add number 4) b) d=12e^-1
    Offline

    19
    ReputationRep:
    (Original post by borgunblue)
    I agree with all of it except number 6). The second derivative I got was 44lmg/3

    I would also like to add number 4) b) d=12e^-1
    I agree. I remember the coefficient of lmg was a fraction.
    Offline

    2
    ReputationRep:
    Unofficial Markscheme - Updated
    1)1/root5
    2)k=1
    3)5root17 256 degrees 48.5m
    4)shown then 6 d=12e^-1
    5)shown then when t=pi/12 speed=U and distance travelled when they meet is (U/6)pi+3
    6)shown then sin(theta)=5/6 and it is stable as the second derivative equals 44/3lmg here
 
 
 
  • See more of what you like on The Student Room

    You can personalise what you see on TSR. Tell us a little about yourself to get started.

  • Poll
    What's your favourite Christmas sweets?
  • See more of what you like on The Student Room

    You can personalise what you see on TSR. Tell us a little about yourself to get started.

  • The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

    Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

    Quick reply
    Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.