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!

Homework Help: Solve for t

  1. Mar 26, 2009 #1
    1. The problem statement, all variables and given/known data

    I put this under Pre-Calc because we're not doing Physics, we're just solving for t and don't know the algebra for it.

    Solve for t

    y = -4Ve^(-t/4) - 4gt + 4V

    2. Relevant equations

    V = Initial Velocity
    g = Gravity
    t = Time

    3. The attempt at a solution

    y = 0 (Physics problem, hitting a golfball and solving for t when y = 0)

    -4V = -4Ve^(-t/4) - 4gt
    V = Ve^(-t/4) + gt
    1 = e^(-t/4) + gt/V
    0 = -t/4 + ln(gt/V)

    Couldn't get further
  2. jcsd
  3. Mar 26, 2009 #2
    if you dont have some extra info, it looks impossible to solve for t. But, you might have as the initial velocity v=0, wich of course makes it easy to solve for t. What is the exact problem, or is what you already wrote all?
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook