Concept explainers
BIO Bird Migration. Canada geese migrate essentially along a north-south direction for well over a thousand kilometers in some cases, traveling at speeds up to about 100 km/h. If one goose is flying at 100 km/h relative to the air but a 40-km/h wind is blowing from west to east, (a) at what angle relative to the north-south direction should this bird head to travel directly southward relative to the ground? (b) How long will it take the goose to cover a ground distance of 500 km from north to south? (Note: Even on cloudy nights, many birds can navigate by using the earth’s magnetic field to fix the north-south direction.)
Want to see the full answer?
Check out a sample textbook solutionChapter 3 Solutions
University Physics with Modern Physics (14th Edition)
Additional Science Textbook Solutions
Modern Physics
Cosmic Perspective Fundamentals
The Cosmic Perspective
Essential University Physics (3rd Edition)
Physics for Scientists and Engineers with Modern Physics
Physics for Scientists and Engineers: A Strategic Approach, Vol. 1 (Chs 1-21) (4th Edition)
- A particle initially located at the origin has an acceleration of a=3.00jm/s2 and an initial velocity of vi=5.00im/s. Find (a) the vector position of the particle at any time t, (b) the velocity of the particle at any time t, (c) the coordinates of the particle at t = 2.00 s, and (d) the speed of the particle at t = 2.00 s.arrow_forwardA sailor in a small sailboat encounters shifting winds. She sails 8.00 km south, then 15 km 30deg E of N, and then 12km 25deg N of W. Use polygon method to determine magnitude and direction of her resultant displacement.arrow_forwardA sailor in a small boat encounters shifting winds. She sails 8 km south, then 15 km 30o E of N, and then 12 km 25o N of W. Use the polygon method to determine the magnitude and direction of her resultant displacement.arrow_forward
- A flock of ducks is trying to migrate south for the winter, but they keep being blown off course by a wind blowing from the west at 12 m/s. A wise elder duck finally realizes that the solution is to fly at an angle to the wind. If the ducks can fly at 16 m/s relative to the air, in what direction should they head in order to move directly south?arrow_forwardWhat is the resultant displacement of a car that travels 2 km north and then turns and travels 4 km east? Be sure to include magnitude and direction.arrow_forwardA runner first runs a displacement A of 3.30 km due south, and then a second displacement B that points due east. The magnitude of the resultant displacement A + B is 5.27 km. What is the magnitude (in m) of B? What is the angle that A + B makes relative to due south? (Your answer must be a positive number from 0 to 180 degrees).arrow_forward
- 99. Subject:- Physics From the window of a building, a ball is tossed from a height y0 above ground with an intial velocity of 8.5 m/s and angle of 19.0 degrees, below the horizontal. It strikes the ground 6.00 seconds later. (a) If the base of the building is taken to be the origin of the coordinates, with upward the positive y-direction, what are the intial coordinates ot the ball? xi= yi= (b) with the positive x-direction chosen to be out the window, find the x- and y- components of the intial velocity. Vi x = ____ m/s Vi y = ____ m/s (c) Find the equations for the x- and y- components of the position as functions of time. x= _____m y=_____m (d) how far horizontallt from the base of the building does the ball strike the ground? =_____m (e) find the height from which the ball was thrown. =_____m (f) how long does it take the ball to reach a point 10.0m below the level of launching? =_____sarrow_forwardProblem An explorer in Antarctica leaves his shelter during a whiteout. He takes 50 m northeast, next 180 m at 72° north of west, and then 150 m due south. Save the explorer from becoming hopelessly lost by giving him the displacement, calculated by using the method of components, that will return him to his shelter. Solution By vector-component approach, we list down the given in a table as follows: Given X-component (w/ sign direction) y-component (w/ sign direction) A = 50 m NE m m B = 180 m 72° NW m m C = 150 m s m m Resultant m m Thus, the magnitude of the resultant vector is R= m With a direction of o = ONW Therefore, the vector needed for him to successfully get back home is Rhome = O SE marrow_forwardPan am Flight 7 was one of the famous planes to disappear into the Bermuda Triangle, which is en route from San Francisco to Hawaii . The first route is due west for 602 km; then it took a detour southeast for 705 m; and the its final route is at 53° north of west, the crash site in the Pacific ocean, for 636 km. What is the plane’s total displacement? Add solution.arrow_forward
- Pan am Flight 7 was one of the famous planes to disappear into the Bermuda Triangle, which is en route from San Francisco to Hawaii . The first route is due west for (687)km; then it took a detour southeast for (966)km; and the its final route is at 53° north of west, the crash site in the Pacific ocean, for (683)km. What is the plane's total displacement?arrow_forwardYou can use any coordinate system you like in order to solve a projectile motion problem. To demonstrate the truth of this statement, consider a ball thrown off the top of a building with a velocity v at an angle ? with respect to the horizontal. Let the building be 54.0 m tall, the initial horizontal velocity be 8.60 m/s, and the initial vertical velocity be 12.5 m/s. Choose your coordinates such that the positive y-axis is upward, and the x-axis is to the right, and the origin is at the point where the ball is released. (a) With these choices, find the ball's maximum height above the ground and the time it takes to reach the maximum height. maximum height above ground m time to reach maximum height s (b) Repeat your calculations choosing the origin at the base of the building. maximum height above ground m time to reach maximum height sarrow_forwardMiltiadis Tentoglou is the current Olympic gold medalist for the running long jump. In one of Miltiadis’ practices, he insanely attempts to jump five people who are laid out on the ground in single file from head to toe. Each of the five individuals are 1.7 meters in height and when Miltiadis launches off the ground his initial resultant velocity is directed 20 degrees above the horizon and the horizontal component of this resultant velocity is 10 m/s. In executing the jump, Miltiadis’ center of mass drops 0.6 meters vertically from the instant of takeoff to the instant of landing. Calculate Miltiadis’ a) initial and final vertical velocities in m/s, b) initial and final resultant velocity magnitudes in m/s, c) total time in the air in seconds and d) how far he was able to jump horizontally in meters. e) How many centimeters of clearance did Miltiadis have on both sides of the jump when jumping the five individuals (assume the clearance distance is the same on both sides of the…arrow_forward
- College PhysicsPhysicsISBN:9781938168000Author:Paul Peter Urone, Roger HinrichsPublisher:OpenStax CollegePrinciples of Physics: A Calculus-Based TextPhysicsISBN:9781133104261Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning