If you are not wearing a seat belt and the car you are driving hits a fixed barrier, you will hit the steering wheel. this is because if you are not wearing a seat belt and the car you are driving hits a fixed barrier, you will hit the steering wheel. this is because the force of the collision has thrown you forward the steering wheel starts moving backward during the collision you continue moving forward as the car slows down.

Inertia.

Explanation:

If you are not wearing a seat belt and the car you are driving hits a fixed barrier, you will hit the steering wheel. This is because inertia.

When driver apply break then comes suddenly in rest position but our body still moving .That is why if we did not wear sheet belt we moves forward direction.

We know that from first law of Newton's ,it states that if an object is in rest or in uniform motion then it will be remain in the rest or in the motion util unless some external force will not apply.This is also called law of inertia.

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.