Which image shows an object or objects moving with non-accelerated motion?

The image that shows an object or objects moving with non-accelerated motion will be the first image.

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The image that shows an object or objects moving with non-accelerated motion is the first image.

Why?

When we are thinking about a non-accelerated motion, we know that the speed will be constant all the time, it means that no matter the time, if we took two consecutive moments of time knowing the object's position, and we are able to calculate the distance between those instants of time, the distance will be the same.

On the other hand, if we have an accelerated motion, it means that the speed will not be constant, so the distance between two consecutive instants of time might not be the same.

From the given image, we can see that the only image that describes a non-accelerated (constant speed) is the first image.

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absorption lines are where light has been absorbed by the atom thus you see a dip in the spectrum whereas.

emission spectra have spikes in the spectra due to atoms releasing photons at those wavelengths.

explanation:

come closer and become far apart and become steam/gas