course phy 202

The results for my trial one and two graph of water flowing out of the cylinder were very closely related. Each graph started at around 195 and sloped down-ward to around 30 in just 30 seconds. So the water was moving fairly rapidly. The water moved fastest at first with the first part of the graph being the most steep, and the second part of the graph being more of a gentle slope. The results for my trial one and two graph of water flowing into the cylinder were also fairly similar. Both graphs started at zero because there was no water in each container at first. Both graphs ended around 215ml. The graphs were more steep at the beginning when water was just starting to fill the cylinders. The graphs started to slope more gradually as the water filled the cylinder. I think this was because the cylinder that was losing water had lost pressure because there was less water to push the remaining water out of the cylinder.

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If I was trying to find the average velocity would I take the inital velocity + the final velocity divided by 2? Or would I divide by the time? I can't remember exactly!

Thanks

average velocity is average rate of change of position with respect to clock time. So you divide the change in position by the change in clock time.