Which of the following statements r true bout momentum Momentum is a vector quanity

The standerd unit on momentum is the joule

An object with mass will have momentum

Total Momentum will is lost when two objects crash into each other
plz choose correct one

Momentum is a vector quanity

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.