12. Two boys are at point X on one side of a river, 40 m wide and having a current of 1.0 m/s, flowing as shown. Simultaneously, they dive into the water in an attempt to reach point Y, directly opposite X. Both swim at 2.0 m/s relative to the water, but one directs himself so that his net motion corresponds to XY, while the other keeps his body perpendicular to the current and consequently lands at point Z. After landing, he runs along the shore to point Y at a speed of 6.0 m/s. Which boy arrives at Y first, and by how much time does he beat the other? 1.0 m/s-

12. Two boys are at point X on one side of a river, 40 m wide and having a current of 1.0 m/s, flowing as shown. Simultaneously, they dive into the water in an attempt to reach point Y, directly opposite X. Both swim at 2.0 m/s relative to the water, but one directs himself so that his net motion corresponds to XY, while the other keeps his body perpendicular to the current and consequently lands at point Z. After landing, he runs along the shore to point Y at a speed of 6.0 m/s. Which boy arrives at Y first, and by how much time does he beat the other? 1.0 m/s-

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

See similar textbooks

Similar questions

are 1.0 m and 1.3 m in length. Calculate the tension in each rope. 27 A ship is sailing at 20 km/h N30°E when it encounters a current of 6 km/h from the south. A passenger is walking across the deck with a speed of 5 km/h at an angle of 40° to the starboard (right) of the bow (front) of the ship. What is the velocity of the passenger relative to the ocean floor? canal barge is being pulled along a
The jet transport B is flying north with a velocity VB = 640 km/h when a smaller aircraft A passes underneath the transport headed in the 69° direction shown. To passengers in B, however, A appears to be flying sideways and moving east. Determine the magnitudes of the actual velocity of A and the velocity which A appears to have relative to B. N UB 69. -E B
(a) An airplane is flying in a jet stream that is blowing at 45.0 m/s in a direction 23° south of east. Its direction of motion relative to the earth is 45° south of west, while its direction of travel relative to the air is 5° south of west. What is the airplane's speed relative to the air mass? m/s (b) What is the airplane's speed relative to the earth? m/s Additional Materials M Reading
An astronaut wearing a space suit floats in the middle of a room with no air and is 20.0m from any wall, the floor and the ceiling. She needs to get to the door. She has only a book and a pencil in her possession. Under these conditions, how can she get to the door?
SITUATION 9. A small projectile is fired vertically downward into a fluid medium with an initial velocity of 60m/s. Due to the drag resistance of the fluid the projectile experiences a deceleration of a = -0.4v³m/s², where v is in m/s. Determine the projectile's velocity and position 4 s after it is fired.
8
Please as soon as possible
c. Find the Resultant of the velocities. * 30 cm/sec 20 cm/sec 36.05 cm / sec, 56.31° N of E 36.05 cm / sec, 56.31° S of E 32.5 cm / sec, 56.31° N of W O 30.5 cm / sec, 50.31° N of E 33.5 cm / sec, 56.31° N of E
A jet airliner moving at 474 mph due east moves into a region where the wind is blowing at 326 mph in a direction 460 north of west. What is the new velocity of the aircraft?
A fighter plane moving 211.0 m/s horizontally fires a projectile with speed 47 m/s in a forward direction 30.0° below the horizontal. What is the speed of the projectile with respect to a stationary observer on the ground? a) 240 m/s b) 283 m/s c) 253 m/s d) 278 m/s
Please refer to the question that is attached. The boat in the picture below is tring to travel north to cross the river at 10 m/s, however the water in the river is flowing west at 4.0 m/s. The boat instead angles itself to counteract the flow of the river. For this problem orient the coordinate axes with x pointing east and y pointing north. Question A: which of the following best represents the velocity of the water? 1. < 0, -4.0 > m/s 2. < 4.0, 0 > m/s 3. < 0, 4.0 > m/s 4. < -4.0, 0 > m/s Question B: Which of the following best represents the desired velocity of the boat? 1. < 0, 10.0 > m/s 2. < -10.0, 0 > m/s 3. < 10.0, 0 > m/s 4. < 0, -10.0 > m/s Question C: Which of the follwing best represents the adjusted velocity of the boat? 1. < -10.0, -4 > m/s 2. < 4, 10.0 > m/s…
Which of the following follow the equations of a projectile? O a torpedo launched under water O a ball rolling off a table O a rocket launching to space Question 2 Which of the following is not a vector? O position O velocity O speed In a large tank of liquid, the hydrostatic pressure at a given depth is a function of O visible light O gravity O fluid density Question 4 If a particle has zero acceleration, does the velocity have to be zero? O yes O no