Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Motion in 2D

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

    A football player has to kick a ball through the uprights that are 36m away and 3.05 high. He kicks the ball at 20m/s and at an angle of 53 degrees. By how much does the ball clear or fall short of the goal?

    2. Relevant equations
    Horizontal Range= vi2 sin 2[tex]\Theta[/tex]/ g

    Height = vi2sin2[tex]\Theta[/tex]/2g

    3. The attempt at a solution

    Using the formulas for range and hieght, I found that the ball traveled a total of 39.23m and reached a maximum height of 13.02. The ball traveled far enough, but how do I find how high the ball was at 36m to see if there was enough height?
  2. jcsd
  3. Feb 3, 2010 #2


    User Avatar
    Homework Helper

    Hint: calculate the time at which the ball was at 36 m, and then plug that time into the equation that determines the height of the ball.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook