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A Simple Reaction-Time Test. A meter stick is held

University Physics | 13th Edition | ISBN: 9780321675460 | Authors: Hugh D. Young, Roger A. Freedman ISBN: 9780321675460 31

Solution for problem 41E Chapter 2

University Physics | 13th Edition

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University Physics | 13th Edition | ISBN: 9780321675460 | Authors: Hugh D. Young, Roger A. Freedman

University Physics | 13th Edition

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Problem 41E

A Simple Reaction-Time Test.? A meter stick is held vertically above your hand, with the lower end between your thumb and first finger. When you see the meter stick released, you grab it with those two fingers. You can calculate your reaction time from the distance the meter stick falls, read directly from the point where your fingers grabbed it. (a) Derive a relationship for your reaction time in terms of this measured distance, d. (b) If the measured distance is 17.6 cm, what is your reaction time?

Step-by-Step Solution:
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Solution 41E a) As the meter stick falls and you read the distance it falls as “d”. Because of the acceleration due to gravity, the stick falls and let’s calculate the time it takes to fall a distance of “d”. From the equation of motion, 2 2 d = ut + 1/2 at = 1/2 at [as initial speed was zero] 2 t = 2gd t = 2d------------------------(1) At this much time you caught the stick again between your...

Step 2 of 3

Chapter 2, Problem 41E is Solved
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Textbook: University Physics
Edition: 13
Author: Hugh D. Young, Roger A. Freedman
ISBN: 9780321675460

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