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: Initial velocity using angle, distance, time

  1. Mar 9, 2010 #1
    1. The problem statement, all variables and given/known data
    From the edge of a rooftop, a boy throws a stone at an angle of 25.0 degrees above the horizontal. the stone hits the ground 4.20 seconds later, 105 m away from the base of the building.(ignore air resistance). Find the initial velocity of the stone, the intial height from where the stone was launched, and the max hieght reached. I am stuck and cannot figure out which equation to use to find the inital velocity!

    2. Relevant equations
    no idea.

    3. The attempt at a solution
  2. jcsd
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook

Can you offer guidance or do you also need help?
Draft saved Draft deleted