The speed of the stream (in km/hr) is: A. ___ km/h 4. Relative Velocity: The driver of a motorboat that can move at 10 m/s in still water wishes to travel directly across a river in which the current flows at 5.0 m/s. What is the length of climb and descent? Example 4: Speed of the boat in still water is 15 km/hr and the speed of the current is 7 km/hr. A motorboat makes the round trip between the two landings in 50 minutes. When will the second man overtake the first? 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. 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. How long will it take a motorboat to travel 48 km in still water? 20. A motor boat, travelling at the same speed, can cover 25 km upstream and 39 km downstream in 8 hours. find the speed of boat in still water and also speed of stream, let the speed of the boat upstream =(x-y)km/hr, and the speed of the boat downstream=(x+y)km/hr, 24/(X-Y)+28/(X+Y)=6 -(1.) • Cloudflare Ray ID: 5db545002ab60e8a A started the business investing RS. The return trip upstream (against the current) takes 90 minutes. SURVEY . The speed of the stream (in km/hr) is: ... a boat travel is 20 km upstream in 6 hours and 18km downstream in 4 hr.find speed of boat in still water and the speed of water current. A motorboat takes 5 hours to travel 200 km going upstream. 800 km by ship at 40 km/hr, Time taken to travel by ship =800/40 = 20 hr. Task 2: Fill in the missing terms in the given number sequences:1. Q. it travels 525 kilometers going downstream in the same amount of time. The diagram shows a person on the bank of a river observing a motorboat aimed upstream. Workspace. A train travels a distance of 720 km at a speed of x km/h. Boat A travels 120 km from P to Q downstream and boat B travels from Q to P upstream. OPtion 1) 1 2) 2 3) 1.5 4) 2.5 5) 3 6) 4 7) 3.5 8) 4.5 9) 5 10)None of these After traveling 4 hours back upstream the boat was still 6 … 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. ____ m/s At what upstream angle must the boat head if the speed of the current is 1.12 m/s? What is the resultant velocity of the boat? 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. Whilst travelling downstream the boat travels at V + C mph where V is the speed of the boat in still water and C is the speed of the current. 7. 2. 6,7,9,16,,275. 2. So, the time is taken by the boat to go 5km in stationary water = 5/4 hrs = 1 ¼ hrs = 1 hr 15 minutes. How far was the island from the harbor if the total trip took 5 h? upstream in 3 hr, Find the time taken by boat to cover 126 km downstream. When will the second man overtake the first? It's a different story calculating a boat's fuel consumption. Question 14. View the answer now. A motorboat velocity is 20 km/h in still water.
since time = distance / speed. A boat goes 30 km upstream and 44 km downstream in 10 hours. 5 P99 P L8 4 E9 L8 9 F9 Example 19 A boat goes 30 km upstream and 44 km downstream in 10 hours. 19. The student averages 5 km/hr walking and 9 km/hr jogging. Find the ratio of the distances travelled at the two speeds. The river current is 7 miles per hour due west. ... A 0.20 kg softball travels 97 meters (m) south for 4.5 seconds (s). A motorboat maintained a constant speed of 24 miles per hour relative to the water going 35 miles upstream and then returning the total time for … It travels 288 KM going downstream in the same amount of time. 33, 35,, 39,,432. … It heads east across a river 110 m wide. Example 19 A boat goes 30 km upstream and 44 km downstream in 10 hours. Seamaster 27 AMP 8.4 Southwold Catching Prawns Broom cabin refit and speed of the boat going downstream will be (a + b) km/hr. A boat cruised downstream for 3 hours before heading back. Speed of motorboat in still water is 45 km/h. A motorboat takes 5 hours to travel 300 km going upstream The return trip takes 2 hours going downstream. Original speed = 500 km/hr. If the speed of stream in the smae of the plot. In the boat, the tourist traveled for 10 hours less than on the raft.
Also, it covers 12 km upstream and 36 km downstream in the same time. 4 km/hr. Find the time to come back of motorboat. asked Jan 24, 2019 in Mathematics by Bhavyak ( 67.3k points) A motorboat that travels with a speed of 20 km/hour in still water has traveled 36 km against the current and 22 km with the current, having spent 3 hours on the entire trip. If sum of upstream and downstream speed of a boat is 82 kmph, and the boat travels 105 km. (in km/h) a) 2 km/h. 43 km up-stream, at which time a log is seen floating by. Divide out the 6 and 8: x-y = 56. x+y = 84 . 5). Also cover 40 km upstream and 48 km downstream in 9 hours. upstream and 40 km downstream in 8 hours. upstream in 3 hr, Find the time taken by boat to cover 126 km downstream. How much time will it take you to move 12 km downstream, in a river flowing at 6.0 km… Online aptitude preparation material with practice question bank, examples, solutions and explanations. upstream in 3 hr, Find the time taken by boat to cover 126 km downstream. 21. Downstream speed = 45/2.5 = 18 km/hr Upstream speed = 39/3.25 = 12 km/hr The stream adds to the upstream speed by the SAME amount it reduced the downstream speed. Boat takes total 15 hours to cover 300 km in downstream and upstream. When the boat starts moving upstream a float was dropped from it. 13. ... A motorboat whose speed is 18 km per hour in still water takes 1 hour more to go 24 km upstream than to return to the same point. And then returned back on a raft. … A boat can travel 9.6 km downstream in 36 min . Sol: The downstream speed is 15 + 7 = 22 km/hr and the upstream speed = 15 - 7 = 8 km/hr. Practice Questions 1. 35. 5 km/hr. A canoeist paddled for 4 hours WIth a 6 km/hr current to reach a campsite. 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. U = 35/5 = 7 kmph D = 39/3 = 13 kmph ... 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. If the motorboat takes 3 hours more to travel x km in still water than to travel (x – 24) km … A motorboat takes 5 hours to travel 100 mi going upstream. 60,000. B. It goes 56 km upstream in 1 hour 45 min-utes. At speed, V, the boater continues to travel upstream for another hour and then returns down stream to her original starting point. The time taken by it to cover the same dis-tance down the stream will be 35 / 150. Then he reduced his speed to 60km/h. A river flows with a uniform velocity, v. A person in a motor boat travels 1 km upstream from her starting point. A motorboat whose speed in still water is 18 km/h, takes 1 hour more to go 24 km upstream than to return downstream to the same spot.
A motorboat takes 6 hours to cover 100 km downstream and 30 km upstream. Find the speed of the current. When the boat is traveling upstream, the speed is: 236/4 = 59 km/h. In 13 hours, it can go 40 km upstream and 55 km down-stream. It can travel 21 km upstream and return in 5 hours. 2. The velocity of the current (in km/hr) is. Speed upstream = 8 km/hr. A slug traveling through a cabbage patch travels 7.0 cm [E], 5.0 cm [W], then 2.0 cm [S]. if the speed during the return journey was 10 km/h more, what were the speeds in m/s Answered by Penny Nom. 22. What is the speed of the motorboat? = 4 \\frac{2}{3} kmph \\end{aligned}, Rate upstream = (750/675) = 10/9 m/sec Effective speed against the current 4 kph (12 kilometers in three hours. If it moves at 45 km per hour, It will take……hours. As she arrives at her original starting point, she comes upon the same log she passed earlier. 100 km by car at 50 km/hr. A boat travels from point A to B, a distance of 12 km. Find the speed of the stream. A motorboat travels at 8.5 m/s. ... 35:06 . Find the speed of the current. The return trip takes 2 hours going downstream. Speed of the motorboat in still water = 80 km per hour The speed of the stream = 20% of 80 = 16 km per hour The total distance travelled by the motorboat in upstream on day2 = 315 km Speed of the motorboat in upstream = 80 – 16 = 64 km per hour Time = 315 hrs = approximately 4.9 hrs = 4 hrs 54 minutes 64 If both the boats starts at 1.00 pm and meets at 2.30 pm and the speed of current is 10 km/hr, then find the sum of the speed of boat A and B. a) 50 km/hr b) 60 km/hr c) 80 km/hr d) 40 km/hr e) Cannot be determined What is the velocity of a student that takes 5.00 minutes to walk to Walton from home? Final Answer The ratio of the distance travelled in upstream to the distance travelled in downstream is 7 : 8. Expressions and Identities, Direct Algorithm to check … A motorboat takes 5 hours to travel 400km going upstream. Solution: Let the speed of the stream be x km/h. 05. 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. 5.If sum of upstream and downstream speed of a boat is 82 kmph, and the boat travels 105 km. What is the rate of the boat in Stillwater and what is the rate of the current? We're walking you through a simple equation for figuring out travel time by boat. was asked on May 31 2017. Find the total time taken by a man rowing to a place at a distance of 88 km and back. Therefore, the relative speed of boat going upstream is (a-b) km/hr. Tags: Question 3 . upstream and 20km. At what angle upstream should the … If after two hours they are 50 km … When motorboat will catch steamer? In 3 days, a total of 2800 passengers travelled in the motorboat and the ratio of male passengers to female passengers is 4 : 3. Find the velocity of the current. If a boat travels a distance downstream in “t1” hours and returns the same distance upstream in “t2” hours, ... Upstream = 2 km/hr. upstream in 3 hr, Find the time taken by boat to cover 126 km downstream. 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. In this case, its total speed is. Video lectures to prepare quantitative aptitude for placement tests and competitive exams like MBA, Bank exams, RBI, IBPS, SSC, SBI, RRB, Railway, LIC, MAT. Algebra. find the speed of boat in still water and speed of the stream. 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 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 The time is taken by the boat to reach the float is: c = current. 40. Find the speed of the current of the river, if the speed of the motorboat in still water is 10 km… The trip upstream takes 5 hours, and the return trip takes 2.5 hours. ii) The boat takes total time of 5 hours to travel 29 km upstream and 24 km … 70+y=84. The direction of the resulting velocity can be determined using a trigonometric function. A motorboat travels 312 Kilometers in six hours going up stream. You can probably figure out your car's gas mileage in your head. It takes the same time for the boat to travel 5 miles upstream as it does to travel 10 miles downstream. Ex. The boat travels 4.2 km up stream turned about and caught up with the float. Upstream speed = b − c. Problem. If he covers former distance at 5 km/h and later distance at 4 km/h, he could cover 2 km more in the same time: The time taken to cover the whole distance at original rate (a) 9 h (b) 7 h (c) 8 h (d)6 1/2 h. 5. A plane heads north with an airspeed of 420 km/h. ... 35 mph. 35) The driver of a motorboat that can move at 10 m/s in still water wishes to travel directly across a narrow strait in which the current flows at 5.0 m/s. Algebra.com DA: 15 PA: 50 MOZ Rank: 65. Find the speed of the stream. ... algebra-and-trigonometry; Ella's motorboat can travel 25 mi/h in still water. The speed of a motorboat in upstream is 12 km per hour while river is flowing with a speed of 2 km per hour. Learn how to calculate boat travel times and distances by boat from the experts at JetDock. Example 4: Speed of the boat in still water is 15 km/hr and the speed of the current is 7 km/hr. Speed of current = (speed downstream – speed upstream) ... A motorboat travels 16 km in 2 hours against the flow of river and travels next 8 km along the flow of the river in 20 minutes. A motorboat leaves a harbor and travels at an average speed of 9 mph toward a small island. When climbing moves at the speed 48 km/h and downhill 25 m/s. 41,51, 56,663. What is the… Also it cobers 40 km upstream and 48 km downstream in 9 hours . 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. ... 35:06 . SQRT(10 625 km 2 /hr 2) = R. 103.1 km/hr = R . Which system of equations can be used to find x, the speed of the boat in miles per hour, and y, the speed of the current in miles per hour? A motorboat takes 4 hours to travel a distance of 22 km downstream and it takes 8 hours to travel the same distance upstream. A boat, capable of traveling 10.8 km/h in still water, motors at full speed in … What is the magnitude of its displacement? The distance from home to college is 8 km, and the student makes the trip in one hour. 28km. How long will it take to move 8.0 km upstream in a river flowing 6.0 km/h? A boat goes 25 km upstream and 35 km downstream in 10 hours. The speed of the stream (in km/hr) is: ... a boat travel is 20 km upstream in 6 hours and 18km downstream in 4 hr.find speed of boat in still water and the speed of water current. If the boat must travel straight to the nearest shore in a river whose current is 12 km/h, What up stream angle must the bow boat point at? Find theapproximate distance covered by boat in downstream (in km). The person continues to travel upstream for 68.4 min at the same speed and then returns downstream to the starting point, where the same log is seen again. Angle Calculation 0.375 20.6q 24 9 tan 1. 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. 2 A motorboat traveling constant speed Of 10 miles per hour. Find the speed of the current of the river. B. If speed of the water current is 10% of the speed of the boat in downstream . A motorboat heads upstream on a river that has a current of 3 miles per hour. A motorboat travels 176 KM in 4 hours going upstream. C. 8 km. downstream. A motorboat leaves a harbour and travels at an average speed of 8 km/h toward a small island. The total time taken = … 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. 35 km/hr north. (Assume that the motorboat maintains a constant speed relative to the water.) A boat covers 24 km upstream and 36 km downstream in 6 hours, while it covers 36 km upstream and 24 km downstream is 13/2 hours. ... A boat travels upstream from B to A and downstream from A to B in 3 hours. Still water: When the water is still and not moving and there’s no flow like that in case of ponds then it’s called still water. A boat which travels 100 km (N), then 40 km (N), and finally 80 km … 3. 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. 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. Problem 20. 04. 3 A plane traveling at 400 mph is flying with a bearing of 40' . At 6 hours 40 minutes steamer sailed from the port at speed 12 km/h. Solution for Find a polynomial function of lowest degree with real coefficients and the numbers 6, 3i as some of its zeros. If the motorboat travels 100 km along the stream in 2 hour 30 min, then the time taken by it to cover the same distance against the stream is (A) 2 hour 20 min (B) 2 hour 40 min (C) 3 hour 10 min (D) 3 hour 20 min Answer: (D) Explanation: The speed of the motorboat in still water is 35 km/hr. Add: 2x = 140. x = 70. Find the speed of the stream. Academia.edu is a platform for academics to share research papers. Question: A motorboat in still water travels at a speed of 36 kmph. As boat travelled 210 miles downstream in 10 hours it's speed is 210/10=21 miles per hour. A motor boat goes 10 km upstream and back again to the starting point in 55 minutes. In a stream running at 2 kmph, a motorboat goes 6 km upstream and back again to the starting point in 33 minutes. The speed of the stream is Downstream: 840/8 = 105 km/h 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. ... Say calculating with upstream distance d = 4x - 20 = 4(35) - 20 = 120 km. 10. An airplane has a velocity, with respect to the air, of 825 km/hr northward. 28. Which boat will arrive on the opposite shore ... A motorboat heads due east at 16 m/s across a river that flows due north at … b) 1.5 km/h. The speed of a boat in still water is 30 mph. y = 84-70 = 14 . Find the speed of the motor boat in still water, if Stream running at 2 kmph OPtion 1) 18 km/hr 2) 20 km/hr 3) 28 km/hr 4) 26 km/hr 5) 24 km/hr 6) 22 km/hr 7) 16 km/hr 8) 32 km/hr 9) 30 km… A motorboat travels a distance of 32 km downstream and 21 km upstream in 3 hours and 21 minutes in total. The return trip takes 2. hours going downstream. If the river's current flows at a rate of 2 km/h, how long will it take him to travel 20 km downstream? 8(x+y) = 672 . It travels 208 kilometers going downstream in the same amount of time. This Week, you are to research the issue of healthcare charging and develop a charging policy for a healthcare institution that reflects current market trends. For many years, scientists thought atoms were solid and could not be divided. 1 See answer oakleegray is waiting for your help. What is the rate of the boat in still water and what is the rate of the current? Students also viewed these Linear Algebra questions. 77, 74,68,624. When will it overtake the first train? 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. 20min. A motorboat travels 25 km/hr in still water. Question 10: Speed of motorboat in still water is 35 kmph. Find the number А. Determine the speed of the stream and that of the boat in still water. If the boat can travel 7 miles downstream in the same time it takes to travel 3 miles upstream, what is the rate of the river's current? From A it travels 4 km downstream in 15 minutes and the remaining 8 km upstream to reach B. Physics. in 8 hours. if the boat's speed in still water is 30 mph find the speed of the current of the river? 4.A man travels 35 km partly at 4 km/h and at 5 km/h. Statement A – Boat’s speed in still water is 10 km/hr Statement B – Current speed is 2 km/hr - Published on 11 Apr 17 Answered by Penny Nom. The average speed on the return trip was 12 mph. 81. A person in a motorboat travels 1. If the motorboat takes 3 hours more to travel x km in still water than to travel (x – 24) km … 35) A student walks and jogs to college each day. It took the boat twice as long to make the return trip. Average speed The car drove on one section of the highway for half an hour at a speed of 80 km/h. The trip up and back takes 6 hours. The total time taken by him is: A. A river flows with a uniform velocity v. A person in a motorboat travels 1.13 km upstream, at which time a log is seen floating by. If the downstream speed is twice as high as the upstream speed, what is the average speed of the boat for the journey from A to B? ... 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. The person continues to travel upstream for 40. 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? 9 min at the same speed and then returns downstream to the starting point, where the same log is seen again. Find the speed of the boat in still water and that of the stream.Let the Speed of Boat in still water be x km… If α² = 5α - 6, β² = 5β - 6, α ≠ β, ... A motorboat heads upstream a distance of 24 km on a river whose current is run at 3 km per hour. upstream and 30km. At the same speed, it can travel 35 km upstream and 52 km downstream in 11 hours. Vector Diagram . 120 seconds . answer choices . What will be the magnitude and direction of the velocity of the boat if it is directed upstream on a river that flows at the rate of 4 km/hr? (II) A motorboat whose speed in still water is 3.40 $\mathrm{m} / \mathrm{s}$ must aim upstream at an angle of $19.5^{\circ}$ (with respect to a line perpendicular to the shore) in order to travel dircctly across the stream. and speed of the stream be b km/ hr. Car goes 114 km track, which consists of ascent and descent at time of 1 hour 35 minutes. 10) A motorboat travels 16 km in 2 hours against the flow of the river and travels the next 8 km along with the flow of the river in 20 minutes. 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. What are the (a) magnitude and (b) direction of the . In 12 hours, B travels distance from Q to T = 12(5x – v) km . 1.5 km/hr B. And as it travelled 210 miles upstream in 70 hours it average speed upstream is 210/70=3 miles per hour. The velocity of a motorboat with respect to still water is 7 ms^{-1} and speed of the stream is 3 ms^{-1}. 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 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. It travels 396 km going down stream in the same amount of time. Asteamex goes the river is 4 km/hr, duration of time as it takes to travel 60 km downstream in find the speed of the steamer in the still water. What is the rate of the boat in still water and what is the rate of the current? Average rate for a return trip: 2015-03-14: From Michael: 1) A motorboat travels 236km in 4 hours going upstream and 840km in 8 hours going downstream. Problem 19. = 32 ´ 6 = 192 kms The relative velocity of mail train with respect to goods train = 80 – 32 = 48 km per hr. At this time the boater passes a floating log. For easy departure and arrival, invest in a JetDock boat lift or dock. 6. A motorboat leaves a harbour and travels at an average speed of 8 km/h toward a small island. A motorboat travels 268 km in 4 hours going upstream. 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. Angelo's kayak travels 14 km/h in still water. A boat goes 30km. At the same speed, it can travel 35 km upstream and 52 km downstream in … Determine the speed of the stream and that of the boat in still water. The same boat goes 5 km downstream and 3 km upstream in 55 minutes. In 13 hours, it can go 40 km upstream and 55 km down-stream. How much time will boat take to travel 38.4 km upstream . The cruise ship The cruise ship has a speed of 12 km/h at a calm surface. What is the rate of the boat in still water and what is the rate of the current? A motor boat can travel 30km upstream and 28 km downstream in 7 hours. After 5 more hours the boat was still 3 miles short of its starting point. Speed in still water = ½ (6+2) = 4 km/hr. Upstream speed = b − c. Problem. Written by teachers for teachers and students, The Physics Classroom provides a wealth of resources that meets the varied needs of both students and teachers. Answers: 2 on a question: Atomic theory, which describes the atoms that make up matter, has been explored for centuries. Ex. A car travels at 30 km/h for the first 2 hours of a journey and then travels at 40 km/h for the next 2 hours of the journey. The motorboat moves up the river at 6mph. A motorboat whose speed in still water is 18 km/h, takes 1 hour more to go 24 km upstream than to return downstream to the same spot. When a boat travels against the current, it travels upstream. A) 45 C) 55 B) 50 D) 60 A boat goes 4 km upstream and 4 km downstream in 1 hour. Find the speed of boat in - 354764 A) 2.8 hrs B) 2.7 hrs A plane traveling 125 km/hr at 35˚ W of N and there is a wind blowing 42 km/hr at 35˚ S of W. What … (b) What is … It can go 16 km upstream and 32 km downstream is the same time. Find the speed of the motorboat in still water. Find the flow velocity of the river. A man travels 5 km/h. leaves on a parallel track and travels east at 120 mph. In a stream running at 2kmph, a motorboat goes 6km upstream and back again to the starting point in 33 minutes. (hints: you know the opposite and resultant sides of your right triangle here). A motorboat travels 176 KM in 4 hours going upstream. The velocity of the current is? A boat travels west at a speed of 24 m/s across a river that is flowing south at 9 m/s. A boat travels upstream from B to A and downstream from A to B in 3 hours. Speed of motorboat in still water is 35 kmph. It travels 80 km upstream and 80 km downstream in a total time of 7 hours. Boats and Streams - Quantitative aptitude tutorial with easy tricks, tips, short cuts explaining the concepts. The polynomial 5++1 can be expressed as the product of the second degree polynomial and the third degree polynomial: :3−2+1 ;and :2++1 ;. 1.0 km b. If sum of upstream and downstream speed of a boat is 82 kmph, and the boat travels 105 km. 18. Ann is driving a motorboat across a river that is 2 km wide. 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 A motorboat travels 25.0 km/h in still water. Rate upstream = 312/6 = 52 km/hr. How ... upstream from a point straight across the river. = ∗ 35 = 17.5 km/hr. (a) What is the spced of the current? A motorboat went downstream for 36 km and immediately returned. A motorboat, capable of traveling 3.85 m/s in still water, wishes to land at a port directly across a 428-m wide river. a boat travels 100 miles downstream in the same length of time it travels 50 miles upstream. Sol: The downstream speed is 15 + 7 = 22 km/hr and the upstream speed = 15 - 7 = 8 km/hr. 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. A motor boat, travelling at the same speed, can cover 25 km upstream and 39 km downstream in 8 hours. Sammy and his motorboat: 2010-05-11: From Jordan: Sammy owns a motorboat that travels 4 miles/hour in still water. Scientists in ancient Greece first proposed that matter was made of units called atoms.
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