Will give brainliest f=ma is newton's 2nd law. how much force would it take to move a 10 kg mass so that it accelerates to 20 m/s2 ? formula: force = mass x acceleration a) 20 newtons of force b) 200 newtons of force c) 2,000 newtons of force

electric

explanation:

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.