[填空题]
If there were no air resistance, hxmb1gnsha+ 5 d+dj2dna n1(p2,w z 7eyow long would it t etcrf526lh5rb-ugg:b 42tia*l7hwaake a free-falling parachutist to fall from a plane at 2400 m to an altitude of 350 m, where she crh rw 2lt*72tagu bag5bl-h5:6ife4 will pull her ripcord? What would her speed be at 350 m? (In reality, the air resistance will restrict her speed to perhaps must lower value) $m/s$
