[填空题]
A high diver leaves the end98 rf vdq.8.s4 kq*qtnj, aend of ayz1j.q2ef 1mx )d fl /xz1dj,g $5.0-\mathrm{m}$ -high diving board and strikes the water 1.3 s later, 3.0 m beyond the end of the board. Considering the diver as a particle, determine
( a ) her initial velocity, $ \overrightarrow{\mathbf{v}}_{0}$ , ${ }^{\circ} \text { above the horizontal }$
(b) the maximum height reached,
(c) the velocity $ \overrightarrow{\mathbf{v}}_{\mathrm{f}}$ with which she enters the water. $^{\circ} $ $\text { (below the horizontal) }$