A man launches his boat from point A on a bank of a straight

来源：学生作业帮编辑：神马作文网作业帮分类：英语作业时间：2024/11/18 05:59:02

A man launches his boat from point A on a bank of a straight river,1 km wide,and wants to reach point B,1 km downstream on the opposite bank,as quickly as possible.He could row his boat directly across the river to point C and then run to B,or he could row directly to B,or he could row to some point D between B and C and then run to B.If he can row 6 km/h and run 8 km/h,where should he land to reach B as soon as possible?(We assume that the speed of the water is negligible compared to the speed at which the man rows.)
___________km from C

楼上那位你的回答不对吧,题目要求是时间最短啊,而不是距离最短.顺便说下,我认为楼主“1 km downstream on the opposite bank”这句话打错了吧,应该是10 km downstream on the opposite bank.你看看是不是?

A man launches his boat from point A on a bank of a straight 英文翻译问题 Hitting even a minor jump launches the bike straight on a boat 还是in a boat? SEX TIPS FOR STRAIGHT WOMEN FROM A GAY MAN怎么样 a boat on the The ball went in the d___ of the man sitting in a boat on th a swimmer is at a point 500m from the closest point on a str Man's got a point. 英语翻译A child withdraws from his piggy bank 10% of the origina the point of a Two cars start off at the same point on a straight highway f 英语翻译A boat constructed from thousands of plastic bottles sai