crate with a mass of 100 kg glides through a space station with a speed of 4 m/s. An astronaut speeds it up by pushing on it from behind with a force of 10 N through a distance of 5 m. The astronaut moves around to the front of the crate and slows the crate down by pushing backwardwith a force of 35 N through a distance of 10 m. After these two maneuvers, what is the final speed of the crat

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.