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Linear Motion Question: Object thrown vertically

  1. Nov 9, 2015 #1
    1. The problem statement, all variables and given/known data
    An object is thrown upwards vertically with an initial speed of a and an initial height of h. It travels for t seconds until it hits the ground with a speed of b. If a was 0.5a, what would the hang time be in terms of t?

    2. Relevant equations
    xf=xo+vot+.5(-10)t^2
    vf=vo+(-10)t

    3. The attempt at a solution
    I tried to split up this problem into two parts: 1) object moving up 2) object moving down. But t is given as the time of the entire problem so I don't know how to split t up for the two parts.
     
  2. jcsd
  3. Nov 9, 2015 #2

    ehild

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    What do you mean on "If a was 0.5a"?
     
  4. Nov 9, 2015 #3

    PeroK

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    If you can't split the problem up, then don't. Trust that equations of motion work for the whole trajectory.

    I assume you mean that the initial speed changes to ##0.5a##?
     
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