physics

An object is released from rest and falls in free fall motion. The speed v of the object after it has fallen a distance y is given by
v2 = 2gy.
In an experiment, v and y are measured and the measured values are used to calculate g. If the percent uncertainty in the measured value of v is 3.34% and the percent uncertainty in the measured value of y is 5.00%, what is the percent uncertainty in the calculated value of g? (Do not enter units for this answer.)

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  1. v is sq

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    2. 👎 2
  2. v is squared, doubling the uncertainty

    the value is then divided by y, which adds its uncertainty

    (2 * 3.34%) + 5.00%

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