Results 1 to 5 of 5
Like Tree2Thanks
  • 1 Post By BobP
  • 1 Post By BobP

Math Help - Formula values and transposition

  1. #1
    Newbie
    Joined
    Nov 2012
    From
    England
    Posts
    3

    Formula values and transposition

    Hi,

    I have just sumitted a maths paper and one question has given me sleepless nights and I'm after advice:

    The question:

    Show that x = v1 + 1/2 at2

    if v2 = v1 + at and x = (v1 + v2) t
    -----------
    2

    I hadn't got a clue where to even start and made a complete hash of it!

    Any advice where I should of started or what I should of done would be great.

    Thanks
    Last edited by maths2454; November 30th 2012 at 01:29 AM.
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Super Member
    Joined
    Jun 2009
    Posts
    662
    Thanks
    133

    Re: Formula values and transposition

    These are, almost, the equations of motion of a body moving with a constant acceleration.

    The first equation is wrong, it should be x=v_{1}t+\frac{1}{2}at^{2}.

    Multiply the third equation by 2, and solve for v_{2}t ; multiply the second equation by t and substitute the v_{2}t .
    Thanks from maths2454
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Newbie
    Joined
    Nov 2012
    From
    England
    Posts
    3

    Re: Formula values and transposition

    Thanks.... but the 1 over 2 bit I am a little confussed over.... does it mean the square root of a?

    It's been way to long since I have done this my brian is a little rusty!
    Follow Math Help Forum on Facebook and Google+

  4. #4
    Super Member
    Joined
    Jun 2009
    Posts
    662
    Thanks
    133

    Re: Formula values and transposition

    Your brian might well be rusty but I think you should be more worried about your brain.

    \frac{1}{2}at^{2} means at^{2} multiplied by a half.
    Thanks from maths2454
    Follow Math Help Forum on Facebook and Google+

  5. #5
    Newbie
    Joined
    Nov 2012
    From
    England
    Posts
    3

    Re: Formula values and transposition

    Thanks again..... I did a half of at^[2] which has given me the same answer luckily!
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Transposition of formula
    Posted in the Algebra Forum
    Replies: 2
    Last Post: November 1st 2010, 11:11 AM
  2. Transposition of a formula
    Posted in the Algebra Forum
    Replies: 2
    Last Post: April 7th 2010, 06:14 AM
  3. Transposition of Formula question........
    Posted in the Algebra Forum
    Replies: 1
    Last Post: December 8th 2009, 06:15 AM
  4. Transposition of Formula
    Posted in the Trigonometry Forum
    Replies: 4
    Last Post: January 31st 2009, 03:11 PM
  5. transposition of formula
    Posted in the Algebra Forum
    Replies: 2
    Last Post: March 12th 2008, 03:27 PM

Search Tags


/mathhelpforum @mathhelpforum