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: Projectile Motion Question

  1. Mar 21, 2008 #1
    [SOLVED] Projectile Motion Question

    1. The problem statement, all variables and given/known data

    a swimmer moving at 1.80m/s dives off a pier and hits the water .80 m from the edge of the pier how high is the pier above the water

    2. Relevant equations
    Vx=change X /change Time
    change Y = Vyi . change Time +1/2 a . (change time)^2

    3. The attempt at a solution

    i found time with the Vx formula to be .44m/s
    then i punched it into the change Y formula to get the height of the pier as 0.94 m

    im just wondering if i approached it right and by change i mean the displacement triangle i just dont know how to make the symbol sorry

    thanks ahead of time
  2. jcsd
  3. Mar 21, 2008 #2
    Looks good, but don't round any of your answers until you get your final answer and your time is supposed to be in units of s, not m/s.
  4. Mar 21, 2008 #3
    woops a typo there and i didnt round on paper i just wanted to make sure i had it right thanks alot !
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook