Your roommate tosses your keys to you from a 3rd floor balcony 6.0 m above where you can catch them. The toss is at an angle of 60o above horizontal at 2.0 m/s. What is the speed of the keys where you can catch them? (For the local gravitational constant please use g=10 m/s2.)

gas and liquid

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!