Exercise 2 0.25 0.2 Cart Time (s) Vs. Position (m) Time(s) 0.15 0.1 0.05 0 0.2 03 04 06 -0.05 -0.1 Position (m) What is the slope of the best fitting straight line? What is the uncertainty (standard error) in this slope? Do you think that a straight line produces a good fit to the data? What is the average speed and the uncertainty in the average speed of the cart? Is the cart moving with approximately constant speed, or is its speed increasing or decreasing? Justify your answer. time (s) x (m) 0 -0.0687 0.0334 -0.0515 0.0667 -0.0316 0.1001 -0.0133 0.1335 0.0055 0.25 0.1668 0.026 0.2 0.2002 0.0443 0.15 Cart Time (s) Vs. Position (m) 0 0.2 0.3 0.4 0.5 0.6 0.2336 0.062 0.2669 0.0792 0.3003 0.0986 Time (s) 0.1 0.05 0.3337 0.118 0.367 0.1357 -0.05 0.4004 0.1535 -0.1 0.4338 0.1717 0.4671 0.1928 0.5005 0.2116 Position (m)