In lab, we investigated what different factors affect speed, specifically on a slide. We investigated different fabrics on wood, different weights going down the slide, and different angles of the slide. My group decided to test weight and its effect on speed with a control for angles, texture and height. We decided that the heavier an object is, the faster it goes down the slide, with controls for other variables. Other groups in the lab agreed with our findings and we came to a consensus that it was correct. Other groups did various experiments with similar findings as well.
In lecture, we talked about how to graph speed of a rider down a slide. In this, we got an introduction to acceleration. Acceleration is velocity, which is speed while taking direction into account, divided by time. Then we talked about why objects accelerate as they slide down and why forces are so important. We also talked about friction and why
For the reading:
What did you learn? I learned that even though gravity pushes down, there are also forces that push up to oppose gravity. For example, a book has gravity that pushes down on a table, but the table has the exact same opposing force on the book to keep it in place.
What was most helpful? The thing that was most helpful in this reading was the simulation on static or net forces. It's confusing to think of how or why a book won't move on a table, but having a visual was helpful.
What do you need more information on? I would like more information on how a table would push back up on a book and if more stuff is put on the table, how the force the table has that opposes gravity is increased.
What questions/concerns/comments do you have? How does gravity and opposing forces work on slanted objects? Or does it not?
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