[填空题]
If there were no air1-hqv b rhdud 9m- v.e*4su :pe40lcot resistance, how long would it take a free-falling p8ujn+ osd )ckqv+i1i7arachutist to fall from a plane at 3200 m to an altitude of 350 m, where she wis o1)ici+ k7v8 qjd+unll pull her ripcord? What would her speed be at 350 m? (In reality, the air resistance will restrict her speed to perhaps 150 km/h .)
s
km/h