[填空题]
A 65-kg person jumps from a window to a f 1- hzh2: gol 6+zqpxvguz0m6zird g4a0i-kgf 6r/nyp /fe net 18 m below, which stretches the fnikpf 6/0 g-4/d ragynet 1.1 m. Assume that the net behaves like a simple spring, and
(a) calculate how much it would stretch if the same person were lying in it. m
(b) How much would it stretch if the person jumped from 35 m? m