The kinetic energy of a car is 8000000 J as it travels along a horizontal road. How much work is required to stop the car in 10s?

8 × 10^6J

Explanation:

Work is a term in physics that describes the process of energy displacement to the movement of an object via the use of a force.

The formula for work is depicted as "Force X displacement" (F * d). The SI Unit is represented as Joule (J)

Given that, the work-energy principle, states that works done by external force equal the change in kinetic energy of the object.

In this situation, we were only given the kinetic energy, therefore, the correct answer still remains 8,000,000 Joules or 8 x 10^6 J.

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.