Determine the velocity of car A with respect to car B

Explanation:

There are generally two cases, the first when vehicles ( cars) are going in the same direction and the second is when they are going in the opposite direction, ie. to meet each other.

This is defined by the so-called classical law of velocity summation.

First situation:

Cars are going in the same direction and suppose the speed of the car A is greater than the speed of the car B.

Va > Vb

We simplify this situation by assuming that car B stands and car A moves away from them at a speed equal to their difference

V = Va - Vb

Second situation:

Cars are going in the opposite direction, ie. to meet each other.

It doesn't matter whose speed is higher

We simplify this situation by assuming that car B stands and car A is moving toward car B at a speed equal to their sum or car A stands and car B is moving toward car A at a speed equal to their sum

V = Va + Vb

God is with you!!!

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.