If a boat's speed in the still water is 5m/s,and the speed of water in a river is 3m/s.How can继续.we cross the river in the shortest time?And how about the shortest distance?Draw the diagrams.

If a boat's speed in the still water is 5m/s,and the speed of water in a river is 3m/s.How can继续.we cross the river in the shortest time?And how about the shortest distance?Draw the diagrams. 翻译“He's sitting in a boat.” 一道顺逆流问题If a boat leaves dock A for dock B in downstream direction,it takes 4 hours;and if the boat leaves dock B for dock A in countercurrent direction,it takes 5 hours.We know that the water-flow speed is 3km/h,please calculate the spe sit in a boat There's a boat in the m___ of the river. 一道AP微积分题目A boat is pulled into a dock by a rope attached to the bow of the boat and passing through a pulley on the dock that is 1 m higher than the bow of the boat.If the rope is pulled in at a rate of 1.1 m/s,how fast is the boat appr Don’t wait for me if you _______.A.have a hurry B.are in a hurry C.have a speed D.are in a speed Driving in your car with a constant speed of 12 m/s,you encounter a bump in the road that has a circular cross-section.The radius of curvature of the bump is 36.4 m.At what speed must you go over the bump if people in your car are to feel weightless on a boat 还是in a boat?好像都可以? 是sitting in a boat 还是sitting on a boat? in a boat、on a boat那个对火速! A motorboat,which has a speed of 5 meters per second in still water,is headed wast as it crossesa river flowing south at 3.3 meters per second.What is the magnitude of the boat's resultant velocity with respect to the starting point?有点晕,为什 Some boat's a----- in the river.请问A和后面什么单词? 英语短文填空一篇Once a man wanted to go (f ) one side of a river to the (o ) in a boat .He (h ) to take a sheep ,a wolf and a basket of vegetables (w ) him .But he could take (o ) one of them at a time ,because the boat was very (s ).If I (l he's going to row a boat in the summer palace What's the name of the sport ____ you go in a boat 翻译“surfing refers to a person or boat riding speed from the downward movement.” 有图 求真相.Suppose the roller coaster in Fig.6-38 (h1 = 37 m,h2 = 12 m,h3 = 20) passes point A with a speed of 1.20 m/s.If the average force of friction is equal to one third of its weight,with what speed will it reach point The distance travel