"All motion is relative."
Today, I saw just that. During my car ride home on the freeway, I remembered about this blog post that we needed to write. I remembered that all motion is relative to something and that we can find it anywhere. I saw the cars in front, behind, and to the sides of me and thought about how they were moving in relation to me. Some cars were moving at the same speed as ours, and some were moving slower. I could tell that they were moving relative to me, but I knew that the ones going the same speed were moving different than the ones going slower.
The cars moving at the same speed as us were moving relative to the ground at about 60 mph (like we were). However, the two cars were not moving relative to each other.
Down the road, we saw cars going slower than us. As shown in the pictures to the right, it seems as though the cars are going backwards across the window of the car. In reality, they are moving forward but at a slower speed. This creates the illusion that the cars are driving backwards. The car is moving at a certain speed relative to the ground, but it is moving negatively in relation to our car.
There are many other examples of relative motion in the world - from watching the sun and clouds move across the sky, to jogging with your friend in the park. Physics is everywhere!
I liked how you used specific detail about how fast the cars were going, such as the speed you were going, and the approximate speed of the other cars around you.
ReplyDeleteI like how you used different example to explain that all motion is relative to something. You gave us a clear insight on the different perspectives of the things in relation to the car. It is definitely clear to understand that Physics is everywhere!
ReplyDeleteLike the examples being used. Good job for specifying the terms being presented
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