Ultrasonic Motion Detector Lab
Hello, everyone! Today I am going to be telling you about one of the most fun labs I have conducted. I was in a group with two other people, and we were given a packet which had many position v. time and velocity v. time graphs on it. One of the graphs has a line on it and the other was blank. We had to find out how a person must move to get the graph, make a motion map (check out my last post to find out about motion maps), and show what the other graph's line looked like.
Supplies:
- Motion Detector (it makes a weird beeping noise!)
- Laptop with the Program
- Explorer (A calculator like device that is plugged into the laptop to give data)
The program on our laptop gave us both the Position v. Time graph and the Velocity v. Time graph. Each of us had to align the motion detector which was set on the table with our body. Next, we walked in a line in different ways for each graph. Sometimes we had to stand still, like when the Position v. Time graph had a straight horizontal line on it. We found that when the line on the Position v. Time had a negative slope (went downwards), a person must walk from the starting position towards the motion sensor at a constant speed. When the line on the same graph had a positive slope (going upwards), a person didn't start at the origin and walked at a constant speed in one direction. When the line on the Velocity v. Time graph was a straight, horizontal line, the person had to stay in one place and not move. The corresponding Position v. Time graph was also a straight horizontal line.
What I Thought About This Lab
Like I said before, I thought this lab was really fun and interesting. I liked having to think about how a person has to walk to match the graph. It was fun to walk it out and compare my graph results with the other people in my group. This was my favorite lab that we did so far. It was easy most of the time, but sometimes the way we walked wasn't accurate and we had to try to walk again.
~If you want more information about this, click the link below~
More About Motion Detectors
Hi Nikhita! (Or do you want me to call you Nikki? I wasn't sure.) How is your Sunday so far? Anyway, I just read your blog- I like it! I really like how you chose nice colors, so it isn't boring like mine. I will have to fix that when I have some spare time. But back to your blog, I really think that is detailed in a way that if we chose a totally random person that doesn't even go to our school, they would be able to know what is going on in our class and how to do what we do. Like Jennifer said, an idea would be to post some more pictures to make it easier to picture, but I honestly don't think it matters. In regards to your comments about the white board discussions, I know exactly what you mean. I have that same issue- I feel like it will be the end of the world to speak in front of the class due to the risk that I may be wrong. I don't even consider that I may be correct, for that matter! I guess the both of us can and will work on that as the year continues. I look forward to your future posts and working with you. Have a good day! (Please don't judge me if there is mistakes in this comment- my computer has been spazzing out on me lately. Stupid technology! :P ) From Kelly.
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