A2.9 × 103 kg car accelerates from rest under the action of two forces. one is a forward force of 1148 n provided by traction between the wheels and the road. the other is a 941 n resistive force due to various frictional forces. how far must the car travel for its speed to reach 2.7 m/s? answer in units of m.

The car must travel 51.34 m for its speed to reach 2.7 m/s

Explanation:

Mass of car = 2.9 x 10³ kg

Forward force = 1148 N

Resistive force = 941 N

Total force = 1148 - 941 = 207 N

We know

            Force = Mass x Acceleration

              207 = 2.9 x 10³ x Acceleration

            Acceleration = 0.071 m/s²  

Now we have equation of motion, v² = u² + 2as

      Initial velocity, u = 0 m/s

      Final velocity, v = 2.7 m/s

      Acceleration, a = 0.071 m/s²  

Substituting

        v² = u² + 2as

       2.7² = 0² + 2 x 0.071 x s

        s = 51.34 m

The car must travel 51.34 m for its speed to reach 2.7 m/s

see earlier

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.