Toy cars 1, 2, and 3 are launched horizontally with the trajectories shown below. Cars 1 and 2 are launched from a 15m high cliff, while Car 3 is launched from a 30m high cliff. We can ignore air friction.

true tan speed = ang vel x radius

c) up

hope this

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.

not too sure thinking all accelerations are pointed down