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Velocity question i can't figure it out

  1. Nov 11, 2008 #1
    Velocity question...i can't figure it out :(

    A person throws a baseball straight up from the ground. The baseball leaves the persons hand with an initial velocity of 10.0 m/s [up]. The acceleration of the ball is 9.81 m/s 2 [down]. Assume up as the positive direction.

    a. what is the velocity of the baseball after 0.50 s?
    b. what is the velocity of the baseball after 1.50 s?

    THANK YOU SOOO MUCH IN ADVANCE!
     
  2. jcsd
  3. Nov 11, 2008 #2
    Re: Velocity question...i can't figure it out :(

    please answer :(
     
  4. Nov 11, 2008 #3

    LowlyPion

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    Homework Helper

    Re: Velocity question...i can't figure it out :(

    How would you go about solving the problem?

    What is it you are stuck on?

    For instance I know how to figure it out, but I'm not getting the grade, nor am I taking your tests.

    How do you think to go about it?
     
  5. Nov 11, 2008 #4
    Re: Velocity question...i can't figure it out :(

    I seriously have no idea...
    this whole velocity is driving me crazy..
    can you explain?
     
  6. Nov 11, 2008 #5
    Re: Velocity question...i can't figure it out :(

    well, you know the Kinematical equations.
    v = u + at
    s = ut + 0.5at^2
    v^2 = u^2 + 2as
    Use them
     
  7. Nov 11, 2008 #6
    Re: Velocity question...i can't figure it out :(

    let's start by asking you this : what formula's for velocity do you know ?

    marlon
     
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