Results 1 to 3 of 3

Math Help - Instantaneous Velocity calculus

  1. #1
    Junior Member
    Joined
    Oct 2008
    Posts
    26

    Instantaneous Velocity calculus

    s(t)= -16t^2 + 400t + 5

    What is the Instantaneous Velocity after 8 sec?

    I'm not exactly sure what to do..
    Follow Math Help Forum on Facebook and Google+

  2. #2
    MHF Contributor
    Grandad's Avatar
    Joined
    Dec 2008
    From
    South Coast of England
    Posts
    2,570
    Thanks
    1

    Velocity

    Hello civiliam
    Quote Originally Posted by civiliam View Post
    s(t)= -16t^2 + 400t + 5

    What is the Instantaneous Velocity after 8 sec?

    I'm not exactly sure what to do..
    The velocity at any instant is given by the value of \frac{ds}{dt} at that instant. So you need to differentiate your function (are you OK with that?), to get a formula for \frac{ds}{dt} in terms of t. Then plug in the value t = 8. (You should get the answer 144.)

    Can you complete it now?

    Grandad
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Junior Member
    Joined
    Oct 2008
    Posts
    26
    Thanks man did it got exactly that
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Instantaneous Velocity
    Posted in the Calculus Forum
    Replies: 4
    Last Post: July 9th 2010, 05:43 AM
  2. Instantaneous Velocity
    Posted in the Calculus Forum
    Replies: 3
    Last Post: June 29th 2010, 02:38 PM
  3. Replies: 3
    Last Post: February 20th 2010, 07:21 PM
  4. Instantaneous velocity
    Posted in the Calculus Forum
    Replies: 8
    Last Post: September 24th 2008, 03:37 PM
  5. Instantaneous Velocity
    Posted in the Calculus Forum
    Replies: 2
    Last Post: February 5th 2007, 05:02 PM

Search Tags


/mathhelpforum @mathhelpforum