Acceleration - Motion III - 1/28/18

Weekly Blog : Victor N. 8B

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Summary

Acceleration is an example of a vector quantity, that measure the magnitude and direction. This is the rate of which an object changes its velocity. You are accelerating when you change your speed or change your direction. You can make a case that slowing down and changing direction is not acceleration, but acceleration is change in velocity. Don't be mistaken that 'speeding down' is deceleration, for deceleration is negative acceleration. To model acceleration in a graph, you can make a velocity-time graph. The rise / the y-axis represents the change in velocity. The run/x-axis represents the time. To measure acceleration, you take the change in velocity and divided by time. In conclusion, acceleration is a vector quantity representing the change in velocity.

SP2 - Using Models

This week I used to models to demonstrate my learning of acceleration. I used models on Wednesday and Thursday when we did the Acceleration Lab in class. In the lab, we constructed a ramp using a Hot Wheels track and toy car. Using the ramp, we did 9 total runs for 3 different heights. For each height, we did 3 runs and calculate the average distances and velocity. 2 heights represented the acceleration and 1 height represented deceleration. As you can see, I used models this week to demonstrate my understanding of velocity.

XCC - Structure and Function

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The function of an acceleration graph is pretty straightforward. The structure of the acceleration graph does indeed affect the function. As said above in the summary, the x-axis represents the time, and the y-axis represents the change in velocity of the object. If this was any different, the graph would be incorrect. Acceleration can be measured, by solving change in velocity/time, y-axis/x-axis, or rise/run. In the left graph, it's a distance-time graph (speed graph), that shows the speed of an object. The graph shows that the object went back to its original point. In the middle graph, it's a speed-time graph (acceleration graph), that shows the change in velocity of an object. The graph shows that the speed increased over a period of time. The structure of an acceleration graph is set up to see the change in velocity of an object. In the acceleration graph, the steeper the slope, the faster the object's speed is increasing.

Multiplier: Learner

This week I was a learner because I wanted to learn more about acceleration and purpose of it. 

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