Physics
posted by Bill .
A soccer player kicks a ball from the ground into the goal, which is located 17 meters away on the level playing field. The ball leaves the ground at an initial speed of 18m/s and at an initial angle above the horizontal of 23 degrees. Find the angle of the ball's velocity (with respect to the horizontal) as it enters the goal.

It really can't be done unless you specify a specific height it enters the goal. I suspect the author mean enter the goal at ground level, but it was not so stated.
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