Perry the platypus is in the back of a low flying helicopter that is 15 meters off the ground. He jumps out of the helicopter and plummets to the ground. If Perry is 2kg how fast will he be going when he is 5 meters off the ground? (2 sig figs)

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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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