180km/h=（）km/min=（）m/s8m/s=（）m/min=（）km/s
问题描述：
180km/h=（）km/min=（）m/s
8m/s=（）m/min=（）km/s
答
180/60=3 180000/3600=50
60*8=480 0.008 km/s
答
180km/h=180km/60min=3km/min
=3000m/60s=50m/s
8m/s=8m/(1/60)min=240m/min
8m/s =0.008km/s
答
180km/h=180km/60min=3km/min
180km/h=180*1000m/60*60s=50m/s
8m/s=(8*60)m/(1*60)s=480m/min
8m/s=(8/1000)km/s=0.008km/s
答
180km/h=180km/60min=3km/min
180km/h=180000m/3600s=50m/s(这是必需得记的：1km/h=3.6m/s)
8m/s=(8*60)m/60s=480m/min
8m/s=0.008km/s