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1. A ball is dropped from 3.0m and time is measured for it to hit the...

1. A ball is dropped from 3.0m and time is measured for it to hit the ground. Three time are measured: {.46, .51, .43} s. a) Find the average and uncertainty (use standard deviation), and express the time as obs = value ± unc (with the correct sig-figs). b) What is the predicted time to fall if the known acceleration of gravity is 9.801 ± 0.004 m/s 2 ? c) Use (b) and (a) to find the error, and determine if the known is validated by the result (show why or why not).

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