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Getting the init. velocity given G-force?

  1. Jan 25, 2017 #1
    1. The problem statement, all variables and given/known data
    If an object is horizontally pushed with a g-force of 2.6 (imagine a cart with no friction on the wheels being in constant contact with a pusher being pushed for 1600 ft at that g-force and then stops but the cart keeps moving) what is the initial velocity right after it's let go?
    230.3lbf weight of cart
    no friction

    2. Relevant equations
    kinematics aren't useful since I don't have enough information

    3. The attempt at a solution
    the 1600 ft im sure is irrelevant because the cart has the same g-force throughout and is always in contact with the pusher.
    F = 598.78 lbf
     
  2. jcsd
  3. Jan 25, 2017 #2

    gneill

    User Avatar

    Staff: Mentor

    Hi MartinSa,
    Welcome to Physics Forums!

    Not true. You have a constant acceleration and a distance. You should be able to find one of the SUVAT equations that will yield a final velocity.
    Can you explain why you think contact with the "pusher" makes the distance irrelevant?

    The distance is very important: It's the value that you're given that sets the region over which the acceleration occurs. You can set the boundary by either time or distance and there are SUVAT equations to deal with both cases.
     
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