Acar moving initially at 30 m/s accelerates up to 60 m/s during the course of 5 seconds. the average acceleration of the car is .

this could be newton#'s law of cooling. the cooling curve is exponential

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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