Measuring a small time interval with a stopwatch gives a large percentage uncertainty because:

  1. stopwatches are inaccurate
  2. the absolute uncertainty (reaction time) is large compared with the interval
  3. time is not measurable
  4. the interval is long
Answer

B) the absolute uncertainty (reaction time) is large compared with the interval

Relative size. SLO P-11-N-26 · Understanding

Physics MCQ · More Experimental Skills and Data Analysis MCQs · Practise