[填空题]
If there were no air resipae3is08-bjx (bjm 1 q5j/ wuastanceduc kejn f .w-585lq:e, 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 pull her ripcord? What would her speed e5ufljn kq8ec.wd 5:-be at 350 m? (In reality, the air resistance will restrict her speed to perhaps 150 km/h .)
s
km/h