Field Goal Projectile Problem: Time to Score!

[physicsguy98]

A place kicker attempts a field goal, giving the ball an initial velocity of 27.0 m/s at an angle of 30.0° with the level field. The uprights are 35 m from the point at which the ball is kicked and the horizontal bar is 4.0 m from the ground.
At what time after the kick will the ball pass the goal posts?

 

[Delphi51]

Start with the initial velocity. Use trigonometry to find the vertical and horizontal components. The horizontal part is motion at constant speed, d = vt. The vertical motion is accelerated and you can use the velocity and distance formulas for that motion. Go as far as you can and you'll be eligible for more help!