) You are in a room where the wall is not straight, but makes an angle a with the horizontal as in the figure. We throw a ball with angle from the horizontal and initial speed Po. at a distance d from the base of the wall. Take the initial position of the ball to be the origin. + a) Write the x and y positions of the ball as functions of time (L b) If 0=45, how long does it take the ball to hit the wall? Assume that the ball has enough initial velocity to hit the wall. Hint: What is the relationship between x and y values when the ball hits the wall? c) If 0=45, what is the minimum initial speed v, for which we can hit the wall?