At the Billings Auto and Highway Safety Testing Lab, a car with a crash-test dummy inside travels at 38.89 m/s (87 mi/h) toward a stationary car during a crash test. The
moving car takes 0.65 s from the point of car impact to the time when the car comes to a
complete stop. Calculate the deceleration of the car.

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.

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