一辆匀速行驶汽车,速度为72km每小时,牵引力7.2X10三次方N,1分钟内汽车行驶多少km 汽车功率为?
人气：192 ℃ 时间：2019-08-18 01:18:44
解答
行使1200米
功 = 1200 * 7200 = 8640000 J
功率 = 8640000 / 60s = 144000w
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