1.5m/s= km/h

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1.5m/s= km/h
1.5m/s= km/h

1.5m/s= km/h
1.5m/s= 5.4km/h

1.5m/s= 5.4km/h

1h=60×60=3600s
1.5m/s=（1.5×3600/1000）km/h=5.4km/h

授之以渔
1.5m/s= 1.5*(3600/1000) km/h

1.5m/s= km/h km/h=?m/s? 单位换算18km/h=< >m/s20cm/s=< >km/h 1.5m/s=< >cm/s 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 1500m/s=?km/h