1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Free fall can somone help me

  1. Sep 7, 2005 #1
    ok how would i go about solving this an what equations do i use

    [SFHS99 2.P.40.] A worker drops a wrench from the top of a tower 89.0 m tall. With what velocity does the wrench strike the ground? (Assume the positive direction is upward.)
    wrong check mark m/s

    i have to use this webassign thing to do my assingments and i have limited tries to get them right thats why im asking for help thanks alot that is just one of many but they are all like that
  2. jcsd
  3. Sep 7, 2005 #2
    In your phyiscs class you have probably already learned the equations for motion with a constant acceleration. You are given the acceleration (9.8 m/s^s the acceleration due to gravity), the initial velocity (0 m/s), and the distance that the object will travel under the acceleration 89.0 meters.

    Do you know the equation [tex]v_f^2=v_o^2+2ax[/tex] where x is the distance traveled? You have probably seen equation already. If you dont know it, refer to your physics book to see how it was derived and then memorize the equation.

    Solving this problems is just a matter of plugging the numbers into the equation.
  4. Sep 7, 2005 #3
    thanks i got it
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Similar Discussions: Free fall can somone help me
  1. Free falling can (Replies: 4)

  2. Free Fall help (Replies: 1)