14.40: A small 1.35-gram mass is launched from the to
3.g k tpj::6ku;:zn pzydvb .cp of a cliff at an angle of
jbpkztc6 v:n .:yukg;z3d .p:$15.9^{\circ}$ 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)