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: Air time of an arrow

  1. Nov 19, 2007 #1
    If an arrow is shot at an angle 45 to the horizontal, and lands in the ground a distance(same height as it was shot) 100m away, is it possible to work out the time taken? I can't figure it out...I have been messing around with equations, but because we don't have an initial velocity I can't get it.

    Any ideas???
  2. jcsd
  3. Nov 19, 2007 #2

    Doc Al

    User Avatar

    Staff: Mentor

    Assuming you can ignore the complications of air resistance, you should be able to figure it out. Hint: Write separate equations for vertical and horizontal position as a function of time. Then solve them together, making use of the given information. (You don't need to know the initial velocity--just call it "v".)
  4. Nov 19, 2007 #3
    Cheers for the input:smile:

    I don't know how I didn't realize it was that simple!
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook