Results 1 to 3 of 3

Math Help - acceleration question

  1. #1
    Junior Member cinder's Avatar
    Joined
    Feb 2006
    Posts
    60

    acceleration question

    I know the answer to the following problem is 32m/s^2, but I don't see how it is obtained if you're not given t (time).

    The catapult of the aircraft carrier USS Abraham Lincoln accelerates an F/A-18 Hornet jet fighter from rest to a takeoff speed of 173 {\rm mi/h} in a distance of 307 {\rm ft} . Assume constant acceleration.

    After it gave me the answer, I was then able to figure out t.
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Junior Member cinder's Avatar
    Joined
    Feb 2006
    Posts
    60
    I figured it out. I missed that problem... should have just kept at it.

    v^2_x=v^2_{0x}+2a_x(x-x_0)
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Forum Admin topsquark's Avatar
    Joined
    Jan 2006
    From
    Wellsville, NY
    Posts
    9,887
    Thanks
    326
    Awards
    1
    Quote Originally Posted by cinder View Post
    I know the answer to the following problem is 32m/s^2, but I don't see how it is obtained if you're not given t (time).

    The catapult of the aircraft carrier USS Abraham Lincoln accelerates an F/A-18 Hornet jet fighter from rest to a takeoff speed of 173 {\rm mi/h} in a distance of 307 {\rm ft} . Assume constant acceleration.

    After it gave me the answer, I was then able to figure out t.
    Quote Originally Posted by cinder View Post
    I figured it out. I missed that problem... should have just kept at it.

    v^2_x=v^2_{0x}+2a_x(x-x_0)
    That equation will give you the acceleration of the Hornet (presuming you do the unit conversions correctly.)

    If you wanted the time it takes the catapult to move the Hornet the 307 ft, you can use
    x = x_0 + \frac{1}{2}(v_0 + v)t

    This equation is often skipped over in classes, but is nothing more than
    x = x_0 + \bar{v}t
    (where \bar{v} is the average speed) when the acceleration is constant. I find it comes in handy every now and again.

    -Dan
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Help please, acceleration/velocity question.
    Posted in the Calculus Forum
    Replies: 3
    Last Post: October 19th 2009, 06:16 PM
  2. Need help with an acceleration question
    Posted in the Pre-Calculus Forum
    Replies: 1
    Last Post: February 23rd 2009, 02:09 PM
  3. Simple Acceleration Question!
    Posted in the Algebra Forum
    Replies: 1
    Last Post: October 7th 2008, 06:30 PM
  4. Acceleration Question
    Posted in the Advanced Applied Math Forum
    Replies: 4
    Last Post: October 30th 2007, 10:02 AM
  5. Question about Acceleration
    Posted in the Calculus Forum
    Replies: 13
    Last Post: April 2nd 2007, 09:21 PM

Search Tags


/mathhelpforum @mathhelpforum