本题目来源于试卷: Differential Calculus，类别为 IB数学
[问答题]
A ladder of length 13 m rests on horizny :2x, co7c; +n4punsn xuy9montal ground and leans against g rlt7sf2 w7+ka vertical wall. The bottom of the ladder is pulled awayl7g+s 2fktr 7w from the wall at a constant speed of $1.2 \mathrm{~ms}^{-1}$ . Calculate the speed of descent of the top of the ladder when the bottom is 5 m away from the wall.
参考答案: 
本题详细解析:
暂无
| 
