The KEOM tower across the street from West is approx. 155 meters high (about 510 feet). On a dare, your friend climbs to the top and drops a physics book to see what will happen. You bet them you can figure out how long it will take to fall to the ground. What time do you confidently tell your insane friend? (Remember, down is always a negative direction. Round answer to tenths place or 2 sig figs. Enter a decimal if needed. Enter the number only, no units)

as we probably am aware that our atmosphere or air have various levels, each level has different gasses, and each gas has another porousness. at the point when the light originates from lower porousness to higher penetrability, it alters its course. with the goal that implies that when the light originates from the moon to the earth, it alters it's course a lot more occasions. it essentially implies that the state of the light piece of the moon is changed on the earth.

not copied too! hope this !

joke:

h o h o hope you have a merry christmas!