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

    16
    ReputationRep:
    Name:  1465037481972434130295.jpg
Views: 75
Size:  510.9 KB hi I have worked out T in part a but when I sub 25/9 into T it doesn't give me the right value for H . Where has it gone wrong ??? I did manage to find T using the equations.... Thanks.Attachment 543001543007
    Attached Images
     
    Offline

    22
    ReputationRep:
    (Original post by coconut64)
    Name:  1465037481972434130295.jpg
Views: 75
Size:  510.9 KB hi I have worked out T in part a but when I sub 25/9 into T it doesn't give me the right value for H . Where has it gone wrong ??? I did manage to find T using the equations.... Thanks.Attachment 543001543007
    You've messed up the fact that A starts 50 metres above the ground. They should both be at height h, not one at height h and the other at height h + 50.

    Their respective equations should be

    A: h = ut - 1/2gt^2 + 50
    B: h = ut - 1/2gt^2
    • Study Helper
    Offline

    13
    Study Helper
    (Original post by coconut64)
    Name:  1465037481972434130295.jpg
Views: 75
Size:  510.9 KB hi I have worked out T in part a but when I sub 25/9 into T it doesn't give me the right value for H . Where has it gone wrong ??? I did manage to find T using the equations.... Thanks.Attachment 543001543007
    Not checked thoroughly, but I do notice that your "h" is the height above the projection point of A, whereas the question's "h" is the height above the ground.

    Edit: Ninja'd again
    • Thread Starter
    Offline

    16
    ReputationRep:
    (Original post by Zacken)
    You've messed up the fact that A starts 50 metres above the ground. They should both be at height h, not one at height h and the other at height h + 50.

    Their respective equations should be

    A: h = ut - 1/2gt^2 + 50
    B: h = ut - 1/2gt^2
    Thanks.
    • Thread Starter
    Offline

    16
    ReputationRep:
    (Original post by ghostwalker)
    Not checked thoroughly, but I do notice that your "h" is the height above the projection point of A, whereas the question's "h" is the height above the ground.

    Edit: Ninja'd again
    Okay I will check it again thanks.
 
 
 
  • 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.