- An astronaut at rest in space with mass 84 kg is hit by a 0.035 kg piece of debris moving at 875 m/s. The debris bounces off in the opposite direction at 5 m/s. What is the velocity of the astronaut after being hit?

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.

grav forces affect all objects magnetic forces affect magnetic objects and electric currents

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