Hey there! Sign in to join this conversationNew here? Join for free

M1 question? Watch

Announcements
    • Thread Starter
    Offline

    17
    ReputationRep:
    I will upload the question below, but it is part c.
    • Thread Starter
    Offline

    17
    ReputationRep:
    Name:  Screen Shot 2017-05-19 at 13.07.37.png
Views: 12
Size:  66.6 KB
    • Very Important Poster
    Offline

    21
    ReputationRep:
    (Original post by APersonYo)
    Name:  Screen Shot 2017-05-19 at 13.07.37.png
Views: 12
Size:  66.6 KB
    Well, what does it mean if the vector ai+bj is parallel to ci+dj?
    • Community Assistant
    • Welcome Squad
    Offline

    19
    ReputationRep:
    (Original post by APersonYo)
    ...
    Set your velocity vector to equal 2{\bf i}+{\bf j} at time t=T and solve for T
    • Thread Starter
    Offline

    17
    ReputationRep:
    (Original post by RDKGames)
    Set your velocity vector to equal 2{\bf i}+{\bf j} at time t=T and solve for T
    I've done that, the solutions are weird or wrong.

    ( 4+4T) i+ (6T) j = (2i+j)

    But if I equate the i and j components, I obtain random values for T??
    • Community Assistant
    • Welcome Squad
    Offline

    19
    ReputationRep:
    (Original post by APersonYo)
    I've done that, the solutions are weird or wrong.

    ( 4+4T) i+ (6T) j = (2i+j)

    But if I equate the i and j components, I obtain random values for i and j. ??
    Sorry I forgot the scalar.

    Make it equal to (2k) {\bf i} + (k){\bf j} and solve.
    • Thread Starter
    Offline

    17
    ReputationRep:
    (Original post by RDKGames)
    Sorry I forgot the scalar.

    Make it equal to (2k) {\bf i} + (k){\bf j} and solve.

    Thank you, the numbers worked out splendidly
    • Community Assistant
    • Welcome Squad
    Offline

    19
    ReputationRep:
    (Original post by APersonYo)
    Thank you, the numbers worked out splendidly
    Do you understand why you need to include the k?
    • Thread Starter
    Offline

    17
    ReputationRep:
    (Original post by RDKGames)
    Do you understand why you need to include the k?
    Yes, earlier, I added the scalar part to the (4+4T) i + (6T) j part;however, that is wrong because that wouldn't equate the two parts.

    Thank you.
 
 
 
  • 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
    Should Spain allow Catalonia to declare independence?
    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.