Aracing car going at 20ms-1 stops in distance 20 m what is the acceleration?

that would be b i just took the test : )

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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float.

archimedes' principle

denser than water sinks in water.

denser than mercury would sink in it

umm its a tricky question