[填空题]
If there were no air resvw0)yd*n/lmg( i8 fyubmg7 eec1 me,)ista i(n,cj. 5(qhl:uns1y vwk9hqnce, how long would it take a free-falling parachutist to fall from a plane at 3200 m to an altitude of 350 m, where she will puy:1w.(s9(kclquij h ,5q nnhvll 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