Physics 9702 · AS & A Level · Errors and uncertainties

Errors and uncertainties — practice question

During an experiment, a radio-controlled car requires $2.50 \pm 0.05\,\text{s}$ to cover $40.0 \pm 0.1\,\text{m}$. What are the car’s average speed and the uncertainty in this value?

  • A$16 \pm 1\,\text{m s}^{-1}$
  • B$16.0 \pm 0.2\,\text{m s}^{-1}$
  • C$16.0 \pm 0.4\,\text{m s}^{-1}$
  • D$16.00 \pm 0.36\,\text{m s}^{-1}$

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