Need help with this question! the answer is wrong and I don't get it.

P = 200 [kW]

Explanation:

To solve this problem we must first find the acceleration developed, by means of the following kinematic equation.

where:

vf = final velocity =  20 [m/s]

vo = initial velocity = 0

t = time = 3 [s]

Through newton's second law, which tells us that the sum of forces is equal to the product of mass by acceleration.

F = m*a

F = 1500*6.66

F = 10000[N]

The power can be calculated by multiplying the speed by the force.

P = F * v

P = 10000*20

P = 200000 [W] = 200 [kW]

answer: the exterior temperature of commercial jet planes as they leave the stratosphere and return to the ground increases steadily.

explanation:

the lower most layer of atmosphere is troposphere which extends from 0 to 12 km above the surface of the earth. the temperature initially decreases as distance is increased from the earth's surface. commercial jets fly in lower part of the stratosphere. the stratosphere extends upto 50 km. the temperature in stratosphere starts rising again due to presence of ozone which traps the uv rays.

thus, when the planes leave the stratosphere and return to the ground, the exterior temperature increases steadily.

prolly a beacuse the momentuem the car has increases while going down hill