Measure Your Reaction Time Here's something you can try at home-an experiment to measure your reaction time. Have a friend hold a ruler by one end, letting the other end hang down vertically. At the lower end, hold your thumb and index finger on either side of the ruler, ready to grip it. Have your friend release the ruler without warning. Catch it as quickly as you can. Part A If you catch the ruler 8.5 cm from the lower end, what is your reaction time? Express your answer using two significant figures. 1 ΑΣφ ? t =

Measure Your Reaction Time Here's something you can try at home-an experiment to measure your reaction time. Have a friend hold a ruler by one end, letting the other end hang down vertically. At the lower end, hold your thumb and index finger on either side of the ruler, ready to grip it. Have your friend release the ruler without warning. Catch it as quickly as you can. Part A If you catch the ruler 8.5 cm from the lower end, what is your reaction time? Express your answer using two significant figures. 1 ΑΣφ ? t =

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter3: Motion Along A Straight Line

Section: Chapter Questions

Problem 64P: An express train passes through a station. It enters with an initial velocity of 22.0 m/s and...

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A simple way of measuring a person's reaction time is to let the person catch a freely-falling ruler or meter stick and then measure the distance from the point where the fingers of the person was placed before the ruler is released to the point where the person's finger was located after the ruler was released. If the distance of fall is 19 cm, what is the person's reaction time? A. 19 s B. 1.9 s C. 0.2 s D. 0.1 s
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