5. In a 580 m stretch of a river, the speed of the current is a steady 5.0 m/s [E]. Hov long does it take in minutes for a boat to finish one round trip, (upstream and downstream) if the speed of the boat is 7.5 m/s relative to the water?
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A: Given , Speed of water flow(u)= 5m/min (W to E) Speed of man (v) = 10m/min
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A: We know thatVelocity=DisplacementTime
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A: All the values (negative or positive) depend upon the choice of a coordinate system.
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A: At highest point final velocity will be zero. Apply kinematics formula, v=u+at Initial speed u=29.5…
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A: As per bartleby guideline , i have solved first question out of multiple questions.
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Q: (II) A kangaroo jumps straight up to a vertical height of 1.45 m. How long was it in the air before…
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Q: 6. A stone was thrown horizontally at a speed of top of a cliff 78.4m high. a) How long did it t…
A: GivenInitial horizontal velocity of stone, ux=5 m/sHeight of cliff, h=78.4 m
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A: Since you have asked multiple question, we will solve the first question for you. If you want any…
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Q: 1. A bowling ball travelling with a constant velocity hits the pins at the end of a bowling lane…
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A: 41) initial speed (u) = 95 kmhrhuman reaction time (t) = 1 sec
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Q: (II) You are driving home from school steadily at 95km/h for 180 km. It then begins to rain and you…
A: Given For 180 Km speed μ = 95kmh For the next part speed v = 65 kms total time t = 4.5 h
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A: Given data: Increase in velocity (ΔV) = 4 m/s Time taken (Δt) = 1.6 s Required: Acceleration (a)
Q: 2. If you throwa rock straight up in the air with a velocity of 29.5 m/s, how high does it go and…
A: At the highest point, velocity of the rock will become zero.
Q: 52. In a marathon race Chad is out in front, running due north at a speed of 4.00 m/s. John is 95 m…
A: let the time in which John passes Chad be t speed of Chad=v1=4 m/s speed of John=v2=4.5 m/s
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- (a) In what direction would the ship in Exercise 3.57 have to travel in order to have a velocity straight north relative to the Earth, assuming its speed relative to the water remains 7.00 m/s? (b) What would its speed be relative to the Earth?4. A swimmer is trying to get across the English Channel. She starts off swimming at 1.75 m/s [W 20° N] and ends up swimming at 2 m/s [N]. What is the change in velocity due to the current?2. A paper airplane flies 2.64 m [W 26° N] and then is caught by the wind, which causes it to travel 3.21 m [S 12° E]. What is the paper airplane's total displacement? ™ [ans: 2.62 m [W 49° S]]
- 4. A boat can travel at a speed of 10 km/hr in still water on a lake in the following water of stream. It can move at 15 km km/hr relative to the water in the stream if the stream speed is 4km/hr. How fast can the boat move fast a tree on the shore, when it is traveling (a) upstream (b) downstream?1. A truck is traveling south at a speed of 70 km/h toward an intersection. A car is traveling east toward the intersection at a speed of 80 km/h. What is the velocity of the car relative to the truck? N w- 70 km/h VTE 80 km/h СЕ1.A river has a steady speed of 0.500 m/s. A student swims upstream a distance of 1.00 km and swims back to the starting point. If the student can swim at a speed of 1.20 m/s in still water, how long does the trip take? ()
- 4. A river flows from south to north at 10 km/h. Anya puts her kayak in the water and paddles north with a speed of 15 km/h relative to the water. At the same time, Bert puts his kayak in the water 60 km north of Anya and paddles south at 15 km/h relative to the water. How much time passes before they meet? d. 6 h а. 1h b. 2 h с. 4h е. 8hi. A bowling ball traveling with constant speed hits the pins at the end of a bowling lane 17 m long. The bowler hears the sound of the ball hitting the pins 3.20s after the ball is released from his hands. What is the speed of the ball? The speed of sound is 340 m/s. A cnr to Iver is Low long will it taeross he River current W E [. RS ::2. A ship was seen on a radar screen to be 10 km east of a particular location. Sometime later, the ship is at 12 km north of west. What is the displacement of the ship?
- 1. Vave. In 1.00 [min], James moved 30.0 [m], 30.9° South of East from his initial position. What is James' average velocity? A. v = 0.429 [m/s]î + 0.257 [m/s]j B. v = 0.429 [m/s]î – 0.257 [m/s] j C. v = 0.257 [m/s]i+ 0.429 [m/s]j D. v = 0.257 [m/s]î – 0.429 [m/s]j1.Two bodies A and B traveling in opposite directions, pass a given point. Body A traveling eastward passes the point with a velocity of 10.0 miles/hr and thereafter accelerates uniformly at 10.0 ft/s*. Body B traveling westward passes the point with a velocity of 20.0 miles/hr and thereafter accelerates uniformly at 6.00 ft/s². When are A and B one tenth of a mile apart?An object is moving in the horizontal axis with a velocity of v, = (4i + 1j)“. Its initial position is r, = (10i – 4j) m. After moving with (20i – 5j) ". m a constant acceleration for 20 seconds, its velocity is v = Solve for the following: a. The components of the acceleration. b. The direction of the acceleration with respect to the x-axis. c. The position of the object at 25 seconds and its direction.