Last week, My physics class had a whiteboard discussion on motion maps. It arose a lot more confusion than clarity. I was not very certain of what I knew any longer. Many of my classmates thought that the discussion got us no where. But I think that it arose interest in finding the correct way to make a motion map.
We did agree that the dot is position and the arrows are velocity(speed and direction).
Here is what a motion map looks like:
The next class meeting, we established that the dot represented an object at a certain interval of time. The arrows represented the direction and speed an object was moving. The slower the speed, the shorter the arrows. And vice versa. For example, take B in the picture. It is going in the positive direction at a higher speed than all the other objects.
Another big thing we spent some time on was velocity graphs. I learned that they show direction and speed, but it does not matter if they are negative from the reference point if they are moving in the positive direction. Sorry for being vague. This is hard to explain with words, but easier to grasp when some one demonstrates.
I feel that I am getting better at physics. I'm catching speed.
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