University Physics (14th Edition)
14th Edition
ISBN: 9780133969290
Author: Hugh D. Young, Roger A. Freedman
Publisher: PEARSON
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Chapter 2, Problem 2.2E
In an experiment, a shearwater (a seabird) was taken from its nest, flown 5150 km away, and released. The bird found its way back to its nest 13.5 days after release. If we place the origin at the nest and extend the +x-axis to the release point, what was the bird's average velocity in m/s (a) for the return 1 light and (b) for the whole episode, from leaving the nest to returning?
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A jeep travels a distance d=22.1m in the positive x direction in a time t1=20.2s, at which point the jeep brakes, coming to rest in t2=7.38s.
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In an experiment, a shearwater (a seabird) was taken from its nest, flown a distance 5040 km away, and released. It found its way back to its nest a time 12.4 days after release. If we place the origin in the nest and extend the +x-axis to the release point, what was the bird's average velocity for the return flight?
A classic physics problem states that if a projectile is shot vertically up into the air with an initial velocity of 146 feet per second from an initial height of 89 feet off the ground, then the height of the projectile, h, in feet, t seconds after it's shot is given by the equation:
h=−16t2+146t+89h=-16t2+146t+89
Find the two points in time when the object is 126 feet above the ground (to one decimal places).
Answer: The object is 126 feet off the ground at the following times: (Enter your two answers separated by a comma. Round to ONE decimal places.)
Chapter 2 Solutions
University Physics (14th Edition)
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