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Homework Help: Overtaking during freefall

  1. Jan 23, 2008 #1
    Heres a question im really stuck on...
    1. The problem statement, all variables and given/known data
    If Person A drops a shot put weighing 1.5 kg from a height of 60m, and at exactly the same time Person B throws down a 100g mass at a speed of 10 m/s from 70m up, at what time would the mass overtake the shot put?

    2. Relevant equations
    mass is irrelevant due to freefall.

    to find the total time it takes for each item to reach the ground, i used

    acceleration due to gravity=9.8m/s^2

    3. The attempt at a solution
    I have no idea where to start...
  2. jcsd
  3. Jan 23, 2008 #2
    If you write out the x equations for both the A ball and B ball, then you can equate the two and find the time they occupy the same position.
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