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: Conservation of Energy Problem

  1. Oct 15, 2008 #1
    1. The problem statement, all variables and given/known data
    0.40 kg ball is thrown with a speed of 9 m/s at an upward angle of 29°.
    (a) What is its speed at its highest point? (Use conservation of energy.)


    2. Relevant equations
    Work of non conservative forces = change in KE + change in PE


    3. The attempt at a solution
    I am not sure how to go about this.
     
  2. jcsd
  3. Oct 15, 2008 #2
    Is this equation correct? 0=-1/2(0.40kg)(v^2)+(-(0.40kg)(9.8m/s^2)h
     
  4. Oct 15, 2008 #3
    I figured it out ;)
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook