An air bag is used to safely decrease the
momentum of a driver in a car accident. the air
bag reduces the magnitude of the force acting on
the driver by
(1) increasing the length of time the force acts
on the driver
(2) decreasing the distance over which the force
acts on the driver
(3) increasing the rate of acceleration of the
driver
(4) decreasing the mass of the driver

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.