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Homework Help: Falling object: time before it reaches the ground and its position

  1. Nov 27, 2009 #1
    A flowerpot is knocked off a balcony 20.0m above the sidewalk and falls toward an unsuspecting 1.75-m tall man who is standing below. How close to the sidewalk can the flowerpot fall before it is too lat for a warning shouted from the balcony to reach the man in time? Assume the man below requires 0.300s to respond to the warning.
    1.93s=t for flowerpot to fall
    v=343m/s at 20C
    t=.053s for sound to reach man
    So, tflower=tlast instant+tsound+treaction
    okay, d=1/2gt2

    Can someone help me i am not sure if i did it right?
    Last edited: Nov 27, 2009
  2. jcsd
  3. Nov 27, 2009 #2
    Re: physics

    that seems gd to me. it has fallen 12.2m so it will be 7.8m above the sidewalk
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