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Homework Help: 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


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


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    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
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