The ball is dropped from a height of 2.00 m. (The ball starts from rest.). Height of fall distance is the independent variable, and time is the dependent variable.

Five trials. (Distance is in m, time in second)

Dist(m) T1(s) T2(s) T3(s) T4(s) T5(s)

0.05 0.1023 0.0971 0.1008 0.1014 0.1026

0.1 0.1432 0.1432 0.1417 0.1423 0.1414

0.15 0.1769 0.1783 0.176 0.1754 0.1732

0.2 0.2047 0.2031 0.2025 0.2023 0.2017

0.25 0.227 0.2248 0.2284 0.2266 0.2276

0.3 0.2494 0.2479 0.2492 0.2468 0.2443

0.35 0.2692 0.2685 0.2697 0.2706 0.266

0.4 0.2884 0.2873 0.2882 0.2879 0.2861

0.45 0.3026 0.3042 0.3045 0.3033 0.3031

0.5 0.3202 0.3224 0.3181 0.3203 0.3231

0.55 0.3362 0.3356 0.3411 0.3372 0.3398

0.6 0.3515 0.3518 0.3506 0.348 0.3489

0.65 0.3682 0.3658 0.3683 0.3642 0.3656

0.7 0.3792 0.381 0.3815 0.3805 0.3808

0.75 0.3945 0.3944 0.3938 0.3959 0.3901

0.8 0.4102 0.4092 0.4083 0.4072 0.4065

0.85 0.4219 0.4224 0.4203 0.4218 0.4193

0.9 0.4339 0.4317 0.4308 0.4352 0.4295

0.95 0.4446 0.4403 0.4413 0.4456 0.4427

1 0.4525 0.4558 0.4573 0.4569 0.4525

1.05 0.4634 0.4686 0.4626 0.4656 0.4662

1.1 0.4765 0.4763 0.4797 0.4802 0.4796

1.15 0.4915 0.4888 0.4885 0.4883 0.4899

1.2 0.5011 0.4995 0.4991 0.5 0.5007

1.25 0.5116 0.5098 0.5122 0.507 0.5069

1.3 0.517 0.5193 0.5199 0.5222 0.5214

1.35 0.5291 0.5335 0.5301 0.5304 0.5313

1.4 0.537 0.5391 0.5433 0.5369 0.54

1.45 0.5499 0.5492 0.5509 0.5503 0.5492

1.5 0.5564 0.5602 0.561 0.5601 0.5607

1.55 0.5686 0.5672 0.5682 0.572 0.5699

1.6 0.5761 0.5778 0.5779 0.5752 0.5769

1.65 0.5887 0.5886 0.5867 0.5891 0.5857

1.7 0.5947 0.5952 0.5979 0.5957 0.5959

1.75 0.6043 0.6036 0.606 0.6025 0.6044

1.8 0.6108 0.6119 0.6113 0.6135 0.6144

1.85 0.6236 0.62 0.6248 0.6228 0.6208

1.9 0.6305 0.6269 0.6318 0.6338 0.6333

1.95 0.6345 0.6385 0.637 0.6389 0.6419

2 0.6438 0.6458 0.6473 0.646 0.6444

What is the uncertainty? Your uncertainty should come from your regressions. You will have to use uncertainty propagation and possibly a weighted average) to get the uncertainty of the final result.

0.6 0.5 0.4 Time (s) 0.3 0.2 0.1 0.0 0.0 0.5 15 2.0 1.0 Fall Distance (m) 0.6 0.5 0.4 Time (s) 0.3 0.2 0.1 0.0 0.0 0.5 15 2.0 1.0 Fall Distance (m)