In a common swimming pool game someone jumps o of the diving board while another person throws a ball to
(or at) them. Sammy jumps o the 0:79m high diving board with an initial angle of 12

to the vertical and an initial
speed of 8:2m=s. Dave is a horizontal distance of 3:6m away in the water and throws a ball at an angle of 36

with
respect to the water surface at the same instant that Sammy leaves the diving board. How fast should Dave throw
the ball so that Sammy catches it on his way down into the water?