14.40: A small 1.35-gram mass is launched from the
po o a zc,3txd:c vw.yt(q1xy2/8toh6top of a cliff at an angle of
cyvxwo cyt8toz3 :/x(qt, p 1.6o2had$15.9^{\circ}$ above the horizontal. When the mass reaches the ground 4.33 seconds later, its velocity is directed at $34.4^{\circ}$ below the horizontal. What is the speed of the mass when it reaches the ground? (ignore air resistance)