Hey, I'm doing a science project thing, and i'm measuring g. One method was freefall, I got times of(adsbygoogle = window.adsbygoogle || []).push({});

0.53

0.55

0.57

0.60

0.63

0.65

0.66

0.67

0.68

0.70

For distances of 0.1m intervals, starting at 1.5m, and ending at 2.4m However, uncertainties are confusing me, reaction time I'm taking as 0.5s, so there's uncertainty of between 94% and 71%, depending of course on the time, anyhoo, to calculate g you use 2s/t squared, so you double uncertainty, and combine them, and it's really confusing, so can anyone help?

(i'm aware this post sort of lacks clarity, so if you need me to explain anyu bit again please ask)

oh, and I need to find overall uncertainty in g, sorry, forgot that bit

Thanks in advance for help. I swear I have tried my best, and the rest of the project is done, it's just the uncertainty in this.

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# Homework Help: Help with accelration due to gravity experiment

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