A small block is sent through point A with a speed of 7.0 m/s. Its path is without friction until it reaches the section of length L=12 m, where the coefficient of kinetic friction is 0.70. The indicated heights are h subscript 1 equals 6.0 space m and h subscript 2 equals 2.0 space m. What is the speed of the block at point B? Express to 3 sig figs.

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6 cos 34, 6 sin 34 trig

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explanation:

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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