Scott is walking 11 m/s due south along a road when he spots Karla, who is walking toward him at 1.5 m/s. On her way, Karla sees Homer and Juanita walking together at 1.3 m/s. For which people can a velocity be determined?
Scott and Karla
B
Homer and Juanita
C
Karla and Juanita
D
Homer and Scott

A. Scott and Karla

Explanation: Velocity includes speed AND direction.

1 the 4 is sig

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.