Physics Help? What can you find with this?

Question

A person kicks a ball a friend starts from rest, at the same point alongside the person,runs down the field at a constant acceleration toward the reciever. if the kicker kicks the ball at a 76.0 degrees above the horizontal, what acceleration does the friend need in order to arrive and tackle the reciever just as he catches the ball?

Answer 1

Not answerable since the initial velocity of the ball is unknown.