Question: Consider the 4 sets of data shown below for v(t) the velocity of an object in freefall with the corresponding linear curve fits. The

Consider the 4 sets of data shown below for v(t) the velocity of an object in freefall with the corresponding linear curve fits. The slope of the best fit line gives the acceleration, and for comparison a dashed line with a slope of -g is shown. 0 t(s) t(s) 0 0.5 15 2.5 0 0.5 15 2 2.5 10 20 (A) 30 10 20(C) 05 Q t(s) 1.5 -10 a -201 (B) v (m/s) -30 -10 0 t(s) 15 0.5 20 (D) Figure 4.1: Example data 1. Which data set, or sets has the best accuracy? 2. Which data set or sets has the best precision?

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