[填空题]
An iron meteorite melts whe1 of57 4ny8a ,dvv/sjco,vz y)cx46ygwg 1 uidn it enters to qeu 9fl8 8h: o6z)cfplsb*6jhe Earth’s atmosphere. If its initial temp98olclpq* shejfu 6 ):8zobf 6erature was -125$^{\circ} C$ outside of Earth’s atmosphere, calculate the minimum velocity the meteorite must have had before it entered Earth’s atmosphere. m/s