[填空题]
A stone is thrown vert(4j.vo(qut0lvl y;hp icallyfre)t f6a zzef3w *f:, upward with a speed of $36 \; m/s$. (a) How fast is it moving when it reaches a height of 22.0 m? $m/s$ (b) How long is required to reach this height for the first time? $s$ (c) How long is required to reach this height for the second time? $s$
