Acar moving with a velocity of 20 meters/second has
1.8 * 105 joules of kinetic energy. what is the mass of the car?

Explanation :

Given that,

Velocity of the car, v = 20 m/s

Kinetic energy of the car,

Kinetic energy is given by :

So,

m = 900 kg

Hence, the mass of the car is 900 kg

answer; i believe the correct answer is (40,000 j) good luck

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.