14.40: A small 1.35-gram mass is launche
,p *azv/vy9zt hzhgdu3 44b,bd from the top of a cliff at an angle of
b9 3hzd,abyu,/ t4 zvzv4g ph*$15.9^{\circ}$ 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)