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

    0
    ReputationRep:
    Hi I'm really struggling on part d...

    Name:  Capture.PNG
Views: 156
Size:  52.7 KB

    Any help?
    Many thanks!
    Offline

    22
    ReputationRep:
    (Original post by pygmypossum)
    Hi I'm really struggling on part d...



    Any help?
    Many thanks!
    What have you tried?
    • Thread Starter
    Offline

    0
    ReputationRep:
    (Original post by Zacken)
    What have you tried?
    Well I know that the maximum speed is at 0.5 meters. So I tried using a V=u +at
    With:
    V=?
    U-8sin30
    A=-9.8
    T=0.964
    Offline

    22
    ReputationRep:
    (Original post by pygmypossum)
    Well I know that the maximum speed is at 0.5 meters. So I tried using a V=u +at
    With:
    V=?
    U-8sin30
    A=-9.8
    T=0.964
    Why don't you use v^2 = u^2 + 2as? Also, whilst h is 0.5, s the displacement from 1.2 m is not 0.5
    • Thread Starter
    Offline

    0
    ReputationRep:
    (Original post by Zacken)
    Why don't you use v^2 = u^2 + 2as? Also, whilst h is 0.5, s the displacement from 1.2 m is not 0.5
    So:

    v^2=(8sin30)^2+2*-9.8*-0.5???
    Offline

    22
    ReputationRep:
    (Original post by pygmypossum)
    So:

    v^2=(8sin30)^2+2*-9.8*-0.5???
    s is not 0.5. Do you know what displacement means? What's your displacement if you move from 1.2 above the ground to 0.5 above the ground? How many metres have you displaced?
    • Thread Starter
    Offline

    0
    ReputationRep:
    (Original post by Zacken)
    s is not 0.5. Do you know what displacement means? What's your displacement if you move from 1.2 above the ground to 0.5 above the ground? How many metres have you displaced?
    It is the distance you have traveled from the start point? Is it 0.7?
    Offline

    22
    ReputationRep:
    (Original post by pygmypossum)
    It is the distance you have traveled from the start point? Is it 0.7?
    It's -0.7.
    • Thread Starter
    Offline

    0
    ReputationRep:
    (Original post by Zacken)
    It's -0.7.
    Sorry yes,
    So I am doing v^2=(8sin(30))^2+2*-9.8*-0.7
    v= 5.45??
    Offline

    22
    ReputationRep:
    (Original post by pygmypossum)
    Sorry yes,
    So I am doing v^2=(8sin(30))^2+2*-9.8*-0.7
    v= 5.45??
    Sounds about right.
    Offline

    0
    ReputationRep:
    (Original post by Zacken)
    Sounds about right.
    Thank you
    Offline

    22
    ReputationRep:
    (Original post by orange8120)
    Thank you
    I'm confused, you're not OP? :lol:
    Offline

    2
    ReputationRep:
    this is M2
    Offline

    22
    ReputationRep:
    (Original post by rigamortis345)
    this is M2
    Does it matter?
    Offline

    2
    ReputationRep:
    (Original post by Zacken)
    Does it matter?
    Yes, because if he is practising for M1 then he should be doing M1 questions, he does not need to do the question.
    Offline

    22
    ReputationRep:
    (Original post by rigamortis345)
    Yes, because if he is practising for M1 then he should be doing M1 questions, he does not need to do the question.
    It's probably just a typo in the title? How d'you know it's M2, by the way?
    Offline

    2
    ReputationRep:
    (Original post by Zacken)
    It's probably just a typo in the title? How d'you know it's M2, by the way?
    I have an exam on M2 in two months.
    in M1 you only have to work out kinematics for one component, either horizontal or vertical, but in M2 its two components for the majority of questions, it does this by giving a particle an angle of elevation.
    Offline

    22
    ReputationRep:
    (Original post by rigamortis345)
    I have an exam on M2 in two months.
    in M1 you only have to work out kinematics for one component, either horizontal or vertical, but in M2 its two components for the majority of questions, it does this by giving a particle an angle of elevation.
    Uhm, there are different exam boards...
 
 
 
  • 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
    Brexit voters: Do you stand by your vote?
    Useful resources

    Make your revision easier

    Maths

    Maths Forum posting guidelines

    Not sure where to post? Read the updated guidelines here

    Equations

    How to use LaTex

    Writing equations the easy way

    Student revising

    Study habits of A* students

    Top tips from students who have already aced their exams

    Study Planner

    Create your own Study Planner

    Never miss a deadline again

    Polling station sign

    Thinking about a maths degree?

    Chat with other maths applicants

    Can you help? Study help unanswered threads

    Groups associated with this forum:

    View associated groups
  • 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

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