A motorboat traveled 35 km upstream on a river and then up an adjacent stream for 18 km, spending 8 hours on the entire trip. However; relative to the ground, it travels in a direction of 7.0 o west of north. ... algebra-and-trigonometry; Ella's motorboat can travel 25 mi/h in still water. B. A motorboat whose speed in still water is 3.60 m/s must aim upstream at an angle of 27.5o(with respect to a line perpendicular to the shore) in order to travel directly across the stream. Average speed The car drove on one section of the highway for half an hour at a speed of 80 km/h. Determine the speed of the stream and that of the boat in still water. A motorboat travels 176 KM in 4 hours going upstream.

If the river is flowing at 1km per hour, it takes him 75 minutes to row to a place and back. A boat travels west at a speed of 24 m/s across a river that is flowing south at 9 m/s. 800 km by ship at 40 km/hr, Time taken to travel by ship =800/40 = 20 hr. Sammy and his motorboat: 2010-05-11: From Jordan: Sammy owns a motorboat that travels 4 miles/hour in still water. From A it travels 4 km downstream in 15 minutes and the remaining 8 km upstream to reach B. If the speed of stream in the smae of the plot. The speed of the stream (in km/hr) is ... Q travels x km upstream at 6 kmph and x km downstream at 14 kmph Q’s average speed = 2*14*6/20 = 8.4 kmph Sujal covers a distance in 40 min, if he drives at a speed of 60 km/h on an average. 1 km/hr C. 2 km/hr D. 2.5 km/hr Explaination: Let the speed upstream be U km/hr and the speed downstream be V km/hr respectively. A motorboat leaves a harbor and travels at an average speed of 18 mph to an island. It takes the same time for the boat to travel 5 miles upstream as it does to travel 10 miles downstream. After travelling for 6 hours, another man starts at the same place as the first man did, following at the rate of 8 km/h. Downstream: 840/8 = 105 km/h leaves on a parallel track and travels east at 120 mph. 10 000 km 2 /hr 2 + 625 km 2 /hr 2 = R 2. Average rate for a return trip: 2015-03-14: From Michael: 21. 13. ... x 3 = (B-7) x 5 3B + 21 = 5B - 35 56 = 2B B = 28 mph Traveling downstream, the current will cause the boat to go faster so the 7 mph current is added to the boat's still water speed. Solution: Let the rate of boat in still water be x and rate of the current be y. Online aptitude preparation material with practice question bank, examples, solutions and explanations. A motorboat takes 4 hours to travel a distance of 22 km downstream and it takes 8 hours to travel the same distance upstream. If a car travels due west for 5.0 km and then directly north for 6.0 km, how far, along a straight line is the car from its starting position? ... about what direction the boat must be aime d upstream in order to head due north?) Time taken to travel by car = 100/50 = 2hr And then returned back on a raft. What are the (a) magnitude and (b) direction of the . The goods train leaves Delhi at 6 am and mail train at 12 noon, hence after 6 hours The distance covered by the goods train in 6 hours at 32 km per hr. vvbrsinθ= θ== =°sin sin−−././ 1140 90 26 v v km h km h r b So the boat must be angled 26° in the upstream direction from the direct path across the river. The Physics Classroom serves students, teachers and classrooms by providing classroom-ready resources that utilize an easy-to-understand language that makes learning interactive and multi-dimensional. A boat goes 25 km upstream and 35 km downstream in 10 hours. A motor boat can travel 30km upstream and 28 km downstream in 7 hours. At the same speed, it can travel 35 km upstream and 52 km downstream in … If a boat goes 7km upstream in 42 minutes and speed of the current is 3kmph, then the speed of the boat in still water is: a) 4.2kmph b) 9kmph c) 13kmph d) 21kmph 5. 5 km/hr. In 3 days, a total of 2800 passengers travelled in the motorboat and the ratio of male passengers to female passengers is 4 : 3. In 15 hours, it can go 40 km upstream and 49 km downstream. If after two hours they are 50 km … 35 km/hr north. Original speed = 500 km/hr. A motorboat travels at 8.5 m/s. The speed of the stream is When climbing moves at the speed 48 km/h and downhill 25 m/s. Let the speed of boat in still water be x km/hr & let the speed of stream be y km/hr 6(x-y) = 336. Scientists in ancient Greece first proposed that matter was made of units called atoms. In the same time it covers a distance of 12 km upstream and 36km downstream. Find the speed of the current of the river. A motorboat travels 336km in 6 hours going upstream and 672 km in 8 hrs going down stream what is the speed of the boat in still water and what is the speed of the current . was asked on May 31 2017. Find the flow velocity of the river. (b) What is … b) 1.5 km/h. The total time taken = … How long will it take to move 8.0 km upstream in a river flowing 6.0 km/h? A) 45 C) 55 B) 50 D) 60 A boat goes 4 km upstream and 4 km downstream in 1 hour. A motorboat, whose speed in 15 km/hr in still water goes 30 km downstream and comes back in a total of 4 hours 30 minutes. 6 km. How far does the student jog? A boat which travels 100 km (N), then 40 km (N), and finally 80 km … It heads east across a river 110 m wide. A train travels at a certain average speed for a distance of 54 km and then travels a distance of 63 km at an average speed of 6 km/hr more than the first speed. So: boat = 70. current = 14 . The speed of the stream (in km/hr) is: a) 4 km/hr b) 5 km/hr c) 6 km/hr d) 10 km/hr Find: a) The rate of the boat in still water (km/h) b) The rate of the current (km/h) Solution: Let X be the rate of boat in still water 35) A student walks and jogs to college each day. The speed of boat in still water is 12 miles per hour and speed of current is 9 miles per hour. ... 12. 5 P99 P L8 4 E9 L8 9 F9 A motorboat travels 25.0 km/h in still water. Read both the statements and choose correct option to determine speed of the boat in still water (in km/hr) i) The boat takes total time of 4 hours to travel 14 km upstream and 35 km downstream together. Q. Boat takes total 15 hours to cover 300 km in downstream and upstream. SQRT(10 625 km 2 /hr 2) = R. 103.1 km/hr = R . and speed of the boat going downstream will be (a + b) km/hr. As in the last problem, the boat must head somewhat upstream so that it has a velocity component upstream that just equals the velocity of the river. If speed of the water current is 10% of the speed of the boat in downstream . (hints: you know the opposite and resultant sides of your right triangle here). A) 2.8 hrs B) 2.7 hrs Students also viewed these Linear Algebra questions. A boat is traveling upstream in the positive direction of an x axis at 14 km/h with respect to the water of a river. A river flows with a uniform velocityv r.A person in a motorboat travels1.29 km upstream, at which time she passes a log floating by.Always with the same engine throttle setting, the boater continuesto travel upstream for another 1.35 km, which takes her 56.3 min.She then turns the boat around and returns downstream to herstarting point, which she reaches at the same time as the same logdoes. Speed upstream $=(x-3)$ kmph He travels a certain distance downstream in 1 hour and come back in 1 1 ... 35 .