Initial Velocity without acceleration given.

  1. 1. The problem statement, all variables and given/known data
    An antelope moving with constant acceleration covers the distance 74.0m between two points in time 7.70s . Its speed as it passes the second point is 14.6 m/s.


    2. Relevant equations
    What is its speed at the first point?

    What is the acceleration?

    3. The attempt at a solution

    I dont know how to type in the formula in here any help? Im kinda confused on how to substitue the formula.
     
  2. jcsd
  3. Hi c0ld

    To type formula here, we use Latex. I don't know if there is a thread somewhere here about Latex tutorial, maybe you can use google.

    About your question, the formulas for kinematics :

    [tex]1) v = u+at[/tex]

    [tex]2) s=ut+\frac{1}{2}at^2[/tex]

    [tex]3) v^2=u^2+2as[/tex]

    v = final speed
    u = initial speed

    Apply those formulas and you'll find the answer :smile:
     
  4. What does s mean? Displacement?


    First point should be initial velocity. All the formulas you posted require acceleration.
     
    Last edited: Sep 14, 2009
  5. Got the problem! It was ((2 * Displacement) / t) - final velocity
     
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