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

    3
    ReputationRep:
    Im struggling to answer and understand this question please help.

    A particle is moving in a straight line with a constant acceleration covers 10m in 2 seconds and 22m in a further 2 seconds. How much further does it travel in the next two seconds?
    • Community Assistant
    Offline

    15
    ReputationRep:
    You can find the acceleration with suvat and simultaneous equations. You have 2 distances and 2 times.
    • Thread Starter
    Offline

    3
    ReputationRep:
    (Original post by an_atheist)
    You can find the acceleration with suvat and simultaneous equations. You have 2 distances and 2 times.
    Yes but I did that and my answer dosent look right the distance is too big considering its only two more seconds?
    • Community Assistant
    Offline

    15
    ReputationRep:
    (Original post by mk_cbc)
    Yes but I did that and my answer dosent look right the distance is too big considering its only two more seconds?
    What answer did you get?
    • Thread Starter
    Offline

    3
    ReputationRep:
    (Original post by an_atheist)
    What answer did you get?
    I got 86..seems wrong.
    • Community Assistant
    Offline

    15
    ReputationRep:
    (Original post by mk_cbc)
    I got 86..seems wrong.
    I got 34m in the next 2 seconds.
    Could you show me your method?
    • Thread Starter
    Offline

    3
    ReputationRep:
    (Original post by an_atheist)
    I got 34m in the next 2 seconds.
    Could you show me your method?
    well I used s=ut+1/2at^2

    in the first equation I used t=2 s=10
    in the second equation I used s=22 and t=4
    then i subsituted the answer for these into t=6
    Im guessing i made a mistake somewhere.
    • Community Assistant
    Offline

    15
    ReputationRep:
    (Original post by mk_cbc)
    well I used s=ut+1/2at^2

    in the first equation I used t=2 s=10
    in the second equation I used s=22 and t=4
    then i subsituted the answer for these into t=6
    Im guessing i made a mistake somewhere.
    10=2u+2a
    22=4u+8a
    20=4u+4a (times top one by 2)
    2=4a
    a=0.5
    u=4.5
    s=4.5*6+0.5*36*0.5=27+9=36m, walking through each step
    • Thread Starter
    Offline

    3
    ReputationRep:
    (Original post by an_atheist)
    10=2u+2a
    22=4u+8a
    20=4u+4a (times top one by 2)
    2=4a
    a=0.5
    u=4.5
    s=4.5*6+0.5*36*0.5=27+9=36m, walking through each step
    Thank youuuu i seee where i went wrong so in the end do you just do 36-22 to find out of much more the particle travelled
    • Community Assistant
    Offline

    15
    ReputationRep:
    (Original post by mk_cbc)
    Thank youuuu i seee where i went wrong so in the end do you just do 36-22 to find out of much more the particle travelled
    yes
 
 
 
  • 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 newspaper do you read/prefer?
    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

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