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Find distance fallen given time of fall

  1. Apr 13, 2015 #1
    1.An object is dropped, and falls for 4.7 seconds before hitting the ground, how high is the object when it was dropped?


    2. D= 1/2a[t/f][v/i][t][/i]
    D= 1/2a[t][/f]
    [T][/f]= 2D/a
    3. The attempt at a solution
    D=1/29.8*4.7
    D= 23 meters
     
    Last edited: Apr 13, 2015
  2. jcsd
  3. Apr 13, 2015 #2

    jedishrfu

    Staff: Mentor

    Welcome to PF!

    Your post is terribly formatted. How do you expect anyone to answer?

    Basically you start with d= 1/2 * g * t^2 and you know g=9.8 m/s/s and you have t=4.7 secs so just plug it in.

    In your case, you need to use t^2 not t in your computation.
     
  4. Apr 14, 2015 #3

    andrevdh

    User Avatar
    Homework Helper

  5. Apr 14, 2015 #4

    jedishrfu

    Staff: Mentor

    Nice reference Andre.
     
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