A classic puzzle...
She either kicked it at a wall exactly 10 foot in front of her, where the ball rebounded off the wall.
Or, she kicked the ball straight up, vertically, at a 90 degree angle, where due to the law of gravity, which states that anything that goes up must come down, when the soccer ball reaches exactly 10 feet, it falls back down.
(Note: This is nearly impossible to achieve -- exactly 10 feet.)
