A stone is projected at a cliff of height h with initial velocity of 42 m/s directed 60 degrees above the horizon. The stone strikes the cliff at point A, 5.50 s after launching. Find: (a) h, the height of the cliff. (b) The maximum height H reached by the stone. (c) The velocity (in component form) of the stone as it strikes the cliff. (d) The angle the final velocity makes with the horizontal at point A on the cliff.