Abaseball team is practicing throwing balls vertically upward to test their throwing arms. a player manages to throw a ball that reaches a maximum altitude of 10 m above the launch point, before falling back down. the acceleration due to gravity is 9.80 m/s 2 . (a) with what initial speed was the ball thrown? (b) how long did it take for the ball to reach its maximum altitude?

answer;

d. are made mostly of liquid

explanation;

-the general   composition and structure planets includes; they have a thick gas and liquid layer covering a small,solid core. mostly the gases are hydrogen and helium atmosphere and layers of liquid hydrogen. for instance neptune and uranus are examples of the outer planets, they have a core covered by ice and ammonia.

-neptune's atmosphere is hydrogen and helium with a bit of methane so there is no oxygen to breath and the interior is made up of frozen water and ammonia with a rock and iron core. thus, there is no liquid water or solid surface to survive.