Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: An apple falls from a tree and 0.5 second later hits the ground

  1. Oct 27, 2003 #1
    will you tell me if my answer is correct? An apple falls from a tree
    and 0.5 second later hits the ground. how fst is the apple falling
    when it hits the ground. i think it is v = gt 5.0m/s2
     
    Last edited by a moderator: Feb 6, 2013
  2. jcsd
  3. Oct 27, 2003 #2

    chroot

    User Avatar
    Staff Emeritus
    Science Advisor
    Gold Member

    Re: acceleration

    Yes, espo, that's correct. Since the apple experiences a constant acceleration, its velocity is growing at a constant rate. In other words, the apple's velocity increases by 9.8 m/s during every second it falls.

    In a half a second, its velocity increases only half of what it would in a full second, or approximately 5 m/s.

    (Be careful with your units -- I believe you meant to say v = gt = 5 m/s, not 5 m/s^2.)

    - Warren
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook