1. Not finding help here? Sign up for a free 30min 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!

Velocity against time

  1. Oct 5, 2004 #1
    Hi...I done a question on velocity-time...I just wanted to amke sure if I am right......the question is: A soldier shoots a bullet vertically into the air at 450 m s^-1. How long does it take for bullet to reach maximum hight...air resistance can be ignored....so I used v=u+at, my final answer was 45 seconds..am I right...please reply anyone :uhh:
  2. jcsd
  3. Oct 5, 2004 #2


    User Avatar
    Homework Helper

    Assuming you're using 10 m/s^2 for g, yes.
  4. Oct 5, 2004 #3


    User Avatar
    Staff Emeritus
    Science Advisor
    Gold Member

    I second that. You're doing okay.
  5. Oct 6, 2004 #4
    Thanks a lot.
  6. Oct 17, 2011 #5
    dude i just did that same question for hw but i got 46s cos i used -9.81m/s2 for acceleration :D
    Last edited: Oct 17, 2011
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?

Similar Discussions: Velocity against time
  1. Time and velocity (Replies: 3)

  2. Velocity and Time (Replies: 0)