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BIO Measure Your Reaction Time Here's something you can
Chapter 2, Problem 77P(choose chapter or problem)
BIO 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. If you catch the ruler 5.2 cm from the lower end, what is your reaction time?
Questions & Answers
QUESTION:
BIO 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. If you catch the ruler 5.2 cm from the lower end, what is your reaction time?
ANSWER:
Step 1 of 2
We have to find the reaction time in catching a ruler at 5.2 cm from the lower end when it is released with one end hanging vertically.
The reaction time can be found by using the equation of motion for a free falling object under gravity.
where,
cm = 0.052 m
initial velocity = 0 m/s