![](https://iknow-pic.cdn.bcebos.com/a1ec08fa513d26976697d51d5efbb2fb4316d82e?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
实话说,这些题目是小学题还是什么?
km是千米,h是小时,m是米,s是秒,min是分钟
72km/h = 20 m/s km/h和m/s的换算公式是前面的数字除以3.6就得到后面的数字
1 cm/s = 0.01 m/s 0.036km/h
5 m/s = 18 km/h 反过来是乘以3.6
1 h = 3600 s 1小时是3600秒
6 min = 0.1 h 1小时是60分钟,6分钟是0.1小时
5min 30s = 330s 1分钟是60秒
3h 15min = 195min
4h 12min = 15120 s 4小时12分钟是252分钟,乘以60等于秒
3600s = 1h