n your previous homework assignment, problem 3.47 asked you about throwing a ball at a wall. Given and v0, you found the angle which made the ball hit the wall as high as possible. (a) Show that, when fired at this "optimum angle," the ball will always hit the wall on its way down (i.e. after it has reached the peak of its trajectory.) (b) Assume the distance to the wall is = 10 m. Using ParametricPlot in Mathematica, draw the ball's trajectory for |v 0| = 30, 20, 15, 10 m/s. Indicate where the ball strikes the wall. Include a printout of your Mathematica workbook as part of your