1km=1000m,1500m=1.5km。1h=60min,1min=60s,1h=60*60s=3600s。4min=4mim÷60min=0.0666h,30s=30s÷3600s=0.00833h。4min30s=0.0749h。1.5km÷0.0749h=20.02km/h。所以,1500米跑进4分30秒的速度大约是20.02千米每小时。
1km=1000m,1500m=1.5km。1h=60min,1min=60s,1h=60*60s=3600s。4min=4mim÷60min=0.0666h,30s=30s÷3600s=0.00833h。4min30s=0.0749h。1.5km÷0.0749h=20.02km/h。所以,1500米跑进4分30秒的速度大约是20.02千米每小时。