A hiker walks 2.5 km [W] and then 4.5 km [S]. What is her total displacement?a. 7.0 km [SW]b. 5.1 km [S29°W]c. 2.0 km [WS]d. 5.1 km [S61°W]A stone is thrown vertically downward with a speed of 5.0 m/s from a bridge. Acceleratingunder Earth's gravity, the stone strikes the water 2.1 seconds later. From what height abovethe water was the stone thrown? (Assume 2 significant digits.)?a. 11 mb. 17 mc.21 md. 32 mAn object initially moving at 8.0 m/s [S] ends up moving at 8.0 m/s [N] after a period of 10.0 s.What is the object's average acceleration during this period?a. 0.80 m/s² [S]b. 0.80 m/s² [N]c. 1.6 m/s² [N]d. 0An astronaut on the moon throws a wrench straight up at 5.23 m/s. How long will it takebefore it is observed to be falling downward with a velocity of 2.64 m/s? The accelerationdue to gravity on the moon is 1.63 m/s² [down].a. 4.83 sb. 1.59 sc. 0.803 sd. 0.629 s

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A hiker walks 2.5 km [W] and then 4.5 km [S]. What is her total displacement? a. 7.0 km [SW] b. 5.1 km [S29°W] c. 2.0 km [WS] d. 5.1 km [S61°W]

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)...

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Question

A hiker walks 2.5 km [W] and then 4.5 km [S]. What is her total displacement?
a. 7.0 km [SW]
b. 5.1 km [S29°W]
c. 2.0 km [WS]
d. 5.1 km [S61°W]
A stone is thrown vertically downward with a speed of 5.0 m/s from a bridge. Accelerating
under Earth's gravity, the stone strikes the water 2.1 seconds later. From what height above
the water was the stone thrown? (Assume 2 significant digits.)?
a. 11 m
b. 17 m
c.
21 m
d. 32 m
An object initially moving at 8.0 m/s [S] ends up moving at 8.0 m/s [N] after a period of 10.0 s.
What is the object's average acceleration during this period?
a. 0.80 m/s² [S]
b. 0.80 m/s² [N]
c. 1.6 m/s² [N]
d. 0
An astronaut on the moon throws a wrench straight up at 5.23 m/s. How long will it take
before it is observed to be falling downward with a velocity of 2.64 m/s? The acceleration
due to gravity on the moon is 1.63 m/s² [down].
a. 4.83 s
b. 1.59 s
c. 0.803 s
d. 0.629 s

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