A ball is rolling down a hill with an initial velocity of 9m/s. What is the acceleration of the ball if its displacement is 10m in 4s? Provide numerical answer and units respectively.

it has to be b, about 97 percent.

as we know our atmosphere or air have different levels. every level has other gasses, and every gas has another permeability. when the light comes from lower permeability to higher permeability, it changes its direction. so that means that when the light comes from the moon to the earth, it changes it's direction many more times. it basically means that the shape of the light part of the moon is changed on the earth.

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there are no atoms