Initial velocity of an object

  1. 1. The problem statement, all variables and given/known data
    What was the initial velocity of an object that moved 120m in 5.60s, reaching a final velocity of 15.0m/s in that time?


    2. Relevant equations
    v=d/t
    a=v2-v1/t2-t1



    3. The attempt at a solution
    I was wondering is there an acceleration that i'm missing here? or am i just off?
    I've been using this eq. v1=v2-a(changeintime)
    Someone help :(
     
  2. jcsd
  3. was the object at rest?
     
  4. The book's answer is 28 m/s =S
     
Know someone interested in this topic? Share a link to this question via email, Google+, Twitter, or Facebook