- #1

- 38

- 1

The book says that the uncertainty of the speed in the first problem is 2.0 mm/s and the uncertainty of position in the second problem is 200. pm. I thought that the uncertainties are 1.0 mm/s in the first problem and 100. pm since uncertainty is defined as estimate +- uncertainty. I went to other sources and found a good number that use my book's reasoning and others that use my reasoning. What do I actually use when calculating uncertainty?