They graph the measured velocity as a function of time including error bars of ±

Question

They graph the measured velocity as a function of time including error bars of ± ? on the data.

They place a line of maximum slope and a line of minimum slope which best fits the data being careful to exclude the outlier (a point which doesn't seem to fit the trend within ± 3?.

Using the method of estimation you determine the gradient and error on the gradient for a line of best fit

(not shown). You determine the acceleration and error on the acceleration, a  ± ?a, to be

Explanation / Answer

The best fit equation would be

y = mx +c

Here c = 0 and m = 10.4-0/(2-0) = 5.2

So y = 5.2 x, this is the required gradient

And error on the gradient is 0 in this case.

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