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!

Projectile motion

  1. Feb 25, 2010 #1
    1. The problem statement, all variables and given/known data

    "A quarterback standing at his own 10.0 yard line throws the football to a receiver at the moment the receiver crosses the (nearer) 30.0 yard line. Knowing that the receiver runs with a velocity of 8.0 m/s, and the quarterback threw the football at an angle of 30 degrees, and that the pass was complete, what was the velocity with which the ball was thrown? (1yard= .01m).

    2. Relevant equations



    3. The attempt at a solution

    First, I drew myself a diagram..
    delta x = Vox *t= (30-10)*t + 8.0*t
    T=2Vo sin 30deg / 9.8 = Vo/9.8

    I don't know if i have to get into component vectors, and use pythagorean theorem, or what not. I have no clue how to solve this...
     
  2. jcsd
  3. Feb 25, 2010 #2
    Well, I'd say you'd have to find out the amount of time it takes the reciever to catch the ball first.
     
  4. Feb 25, 2010 #3
    I've tried doing that. I just ended up with a bunch of equations with t and Vo and I when I put them together I just go in circles.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Projectile motion
Loading...