14.40: A small 1.35-gram mass is launched from the top of a cliff a
-zpxqz6t +s*g(gn z l)t an angle of
gs *z )+- nz6tpxqgl(z $15.9^{\circ}$ 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)