Speed Graphs - Motion II - 1/21/18

Weekly Blog : Victor N. 8B

Distance-Time Graph
Image Location

Summary

There are different ways to look at speed, how fast an object is moving. But there is one way to find speed. To find speed, you take the distance and divide the time. This is rise over the run, which forms a triangle. You can model speed using a graph or a table. As seen above, the rise / the y-axis represents the distance from the initial point. The run/x-axis represents the time. The steeper the slope of the graph, the faster the object is moving. When the slope is moving up, or in the positive direction, the object is moving to the final point. When the slope is moving down, or in the negative direction, the object is moving back to the initial point. As you can see, a graph is one to find speed, how fast an object is moving. You can find speed, by dividing distance/time.

SP2 - Using Models

Distance-Time Graph Activity
This week, I worked deeper on how to find speed. I used models when my table and I matched graphs with problems. We looked at a problem, broke it down, and saw if it matched with the graph. For the most part, we knew what to do. But for some, we had some trouble. We solved our conflict, by looking at the problem more and asking for help. I also used models during our Matchbox Lab on Friday. We used Matchbox Cars to see hypothesize which car would be the fastest. My group and I predicted that the green car, of the black and orange car, would be the fastest. After the lab, our hypothesis was correct and understood the topic of speed more.

XCC - Structure and Function

The function of a speed graph is pretty straightforward. It's a graph that shows the speed of an object. The structure of the speed graph does indeed affect the function. As said above in the summary, the x-axis represents the time, and the y-axis represents the distance from an initial point. If this was any different, the graph would be incorrect. Speed can be measured, by solving distance/time, y-axis/x-axis, or rise/run. For the time is always moving forward, it does not mean the distance will be moving forward. The slope moves forward or backward, based on the object. The structure of a graph is set up to see how fast an object is moving. The steeper the slope, the faster the object is moving.

Multiplier: Learner

I was a learner this week, because I want to grow my understanding of speed and the use of speed graphs.

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