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: Projectile Homework Question!

  1. Oct 21, 2015 #1
    1. The problem statement, all variables and given/known data
    A backpacker throws a rock horizontally off of a cliff with an initial velocity of 11.7 m/s, and the rock lands 17.3 m away from the base of the cliff. What is the final vertical velocity of the rock? Round your answer to 2 decimal places.

    2. Relevant equations
    Δd = vot + 1/2at2

    vf = vo + at

    vf^2 = vo^2 + 2aΔd

    3. The attempt at a solution
    18.9 m/s
  2. jcsd
  3. Oct 21, 2015 #2


    User Avatar
    Staff Emeritus
    Science Advisor
    Gold Member

    You need to show how you got that 18.9 m/s answer. Hint you can find the time of flight easily.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted