[填空题]
A runner hopes to complete the 1bj8fi8:. g leq0,000:9gaw0z0 *uz5c: eg q bd+vd2zcj wkg9-m run in less than 30.0 min. After exactly 27.0 min, there are still 1100 m to go. The runner must thweu:9 bzdg0k2*5vd 9cq0awj c +:gzgzen accelerate at $0.20 \; m/s^2$ for how many seconds in order to achieve the desired time? $s$
