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: Displacement and Height Calculations with Velocity

  1. Feb 5, 2009 #1
    1. The problem statement, all variables and given/known data[/b]

    assume g = 9.81 m/s2, and friction can be ignored.

    A gun is fired horizontally at a target lying on the ground 188 m away, and the bullet hits the center of the target. The muzzle velocity of the gun (the speed with which it fires bullets) is 387 m/s.

    a) How long was the bullet in the air?
    in seconds

    b) How high was the gun above the ground when it was fired?
    in meters

    c) Suppose an arrow can be shot out of a bow at 32.6 m/s. How high above the ground would you have to fire the arrow horizontally to hit the same target over the same distance?
    in meters

    NOTE: Think about how high this is in feet.
  2. jcsd
  3. Feb 5, 2009 #2


    User Avatar
    Homework Helper

    So what did you come up with for a)?
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook