When you blink your eye, the upper lid goes from rest with your eye open to completely covering your eye in a time of 0.024 s.
a. estimate the distance that the top lid of your eye moves during a blink.
b. what is the acceleration of your eyelid? assume it to be constant.
c. what is your upper eyelid's final speed as it hits the bottom eyelid?

Neptune is the eighth planet from the sun. it was the first planet to get its existence predicted by  mathematical calculations  before it was actually seen through a telescope on sept. 23, 1846. irregularities in the orbit of  uranus  led french astronomer alexis bouvard to suggest that the gravitational pull from another celestial body might be responsible. german astronomer johann galle then relied on subsequent calculations to   spot neptune via telescope. previously, astronomer galileo galilei sketched the planet, but he mistook it for a star due to its slow motion. in accordance with all the other planets seen in the sky, this new world was given a name from greek and roman mythology — neptune, the roman god of the sea.