Resistance to the motion of an automobile consists of road friction, which is almost independent of speed, and air drag, which is proportional to speed-squared. for a certain car with a weight of 12000 n, the total resistant force f is given by f = 300 + 1.8v2, with f in newtons and v in meters per second. calculate the power (in horsepower) required to accelerate the car at 0.96 m/s^2 when the speed is 82 km/h.

73.52983 Hp

Explanation:

m = Mass of car =

W = Weight of car = 12000 N

a = Acceleration = 0.96 m/s²

Velocity of the car

From the question

Balancing the forces

The power is 73.52983 Hp

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.