[填空题]
A stone is thrown vertically uk6w4z7t1wv k ve: d;yz 2uzcj5pward with a speed fwibzsr54j*m4r5xj 0 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? $s$
