A ball is thrown in the air and 5 different students are individually measuring the time it takes to fall back down using stopwatches. The times obtained by each student are the following:
6.2 s, 6.0 s, 6.4 s, 6.1 s, 5.8 s
a) What is the uncertainty of the results?[Maximum mark: 2]
The range is $latex 6.4-5.8=0.6$ s and the uncertainty is half the range, so the answer is $latex \pm 0.3$ s.
The mean of the values obtained by the 5 students is:
Therefore the time should be expressed as $latex 6.1\pm 0.3$ s.
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