Time intervals measured with a stopwatch typically have an uncertainty of about 0.2 s, due to human reaction time at the start

Question

Time intervals measured with a stopwatch typically have an uncertainty of about 0.2 s, due to human reaction time at the start and stop moments. What is the percent uncertainty of a hand-timed measurement of (a) 5.5 s, (b) 55 s, (c) 5.5 min?

Kunduz · Accepted Answer

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