6m/s=?km/h

6km/h=( )m/s 6m/s=?km/h km/h=?m/s? 科学换算 紧急!(1.)54km/h=54乘( ) = ( ）m/s (2) 5m/s=5乘( )=( )km/h (3) 10m/s=( )km/h (4) 72km/h=( )m/s(5) 54m/s=( )km/h (6) 18km/h=( )m/s(7) 12.5m/s=( )km/h 如5km/min= km/h= m/h= km/s= m/s 1km/min=?km/h=?m/h=?km/s= m/s 1m/s=( )km/h 1km/h=?m/s 1m/s= 多少 km/h 5.1m/s=多少km/h. 40m/s=多少km/h 120km/h=多少 m/s km/h=m/s啊? 3m/s=( )km/h 1km/h=?m/s 108km/h=( )m/s 5m/s=( )km/h 5m/s=多少Km/h