Physics Question Explain why dust falls to the ground when you pat your hands on your clothes.

It's because of inertia.。。 The clothes move under the slapping of the hand, and the dust is separated from the clothes due to inertia to maintain its original state, so it will fall to the ground...

Highway management. For example, you can't exceed the speed limit, and there is also a speed limit when turning, all to prevent accidents due to inertia.

Beat the clothes: the clothes and the dust are first in a stationary state, pat the clothes with your hands to make the clothes into a state of motion, and the dust on the clothes should continue to remain stationary for inertia, and then the clothes should be in a state of motion has been displaced (I don't know if you are in high school or junior high school, anyway, the position has changed), and the dust is not the dust falls under the influence of gravity.

Measures on the road: cement piers or guardrails on the side of the highway.

Highway Management: Wear a seatbelt What else? Too much.

Inertia. Patting the clothes with your hands, the clothes are deformed back and shrink in the direction of the shot, because the dust has inertia, it has a tendency to maintain the original static state, the clothes shrink, the dust does not move, so the dust leaves the clothes and falls to the ground.

Inertia is a property of matter, and mass is the only measure of inertia. Therefore, it is often forbidden to overload cars on the highway, because the mass is large, the inertia is large, and it is not easy to brake and stop.

Some high-end cars will have airbags, that is, in the middle of the steering wheel, when an emergency occurs, the driver will brake urgently due to inertia, the driver will move forward"Rush"At this time, the airbag opens and fills up to avoid injury to the driver.

The reason why dust sticks to clothes is because of friction, and when we pat clothes, the state of motion of the clothes changes, and the dust still has to maintain its original state of motion due to inertia, so it is separated from the surface of the clothes and falls under the action of gravity.

1. Reduce your speed (in a heavily trafficked area).

2. Use tires with dense patterns (to increase friction).

Inertia. The clothes were patted away, but due to inertia, the dust had not moved, so it detached from the clothes.

Seat belts limit speed when cornering.

Gravity. Speed limit.

Trucks have a load limit.

Wear a seatbelt when driving.

When you pat the clothes with your hands, the clothes change from stationary to moving due to the force of the hands, and the dust on the clothes will remain in the original static state due to inertia, and the dust and the clothes will be separated, and the dust will fall down due to the action of gravity

Dust is an object that is finely dried into powdered soil or other substances, which is reduced to a fine part. Fine powders, dust particles are generally between one hundredth of a millimeter and a few hundredths of a millimeter in diameter, which is invisible to the human eye. What the human eye can see is a behemoth in the dust.

It can be explained by Newton's first law: an isolated particle remains stationary or moves in a uniform linear motion; When people pat their clothes, the clothes will move under force, and the dust will not be forced, and will stay in place due to inertia, so that they will be separated from the clothes; In addition, when you pat your clothes, there will be a turbulence of the airflow, which will carry the dust away.

Because all objects have inertia, when the clothes are swatted, the dust must remain stationary.

When you shoot the clothes, the clothes leave the original position, and the dust on the clothes is still in the original position, so that what you see is the dust flying away from the clothes.

Wind and rain, learn to cross the same boat in the same boat, it is not easy to learn, you have something to say.

Answer: When you pat the clothes with your hands, the hands exert a force on the clothes, so that the clothes change from the original stationary state to the moving state, the dust on the clothes is originally in a stationary state, but the clothes change in motion, and the dust wants to continue to maintain the original static state due to inertia, so when you pat the clothes with your hands, the dust will be separated from the clothes, and after separation, it will fall down due to gravity.

a, before slapping clothes, clothes and dust are in a static state, when beating, clothes are in a state of motion, dust due to inertia to maintain the original state of motion, so dust out of clothes so a correct;

b. After the object absorbs heat, the temperature does not necessarily rise, such as the ice cube melts and absorbs heat, but the temperature does not change; Therefore berror;

c. The rough white cloth used for the movie screen is to use the screen to diffuse reflection, so that people can see it from different angles, so C is correct;

d. The red scarf of primary school students is red because when the white light shines on the red scarf, it only reflects red light, and when the reflected light enters the eyes, what you see is red; Therefore d is wrong

So choose AC

I can only think of two possibilities:

When the surface of the clothes is patted, the surface of the clothes vibrates, and the dust is affected by the force generated by the vibration of the clothes, so the dust moves, and then leaves the surface of the clothes and rises.

The garment leaves its original position after patting it, while the dust stays in place due to inertia, so the dust leaves the surface of the garment.

So far, I'm just thinking about it....

Shaking the clothes a few times can shake off the dust that sticks to the clothes This is because when shaking the clothes, the dust still maintains its original state of motion due to inertia, so the dust and the clothes are separated

When you pat the clothes (the clothes move), the dust has to remain stationary due to inertia.

When you pat your clothes, your clothes are in motion, and the dust remains in its original static state due to inertia, so you can get rid of the dust when you pat your clothes.

When the dust on the body is patted, the dust is originally stationary on the clothes, and when the clothes are slapped hard, the clothes change from stationary to motion due to the action of the force, and the dust still maintains the original static state due to inertia, so the dust is separated from the clothes

So the answer is: static; Rest; Motion; Inertia.

If you pat the clothes next to the dust with your hands, the dust will fly away, because if you pat the clothes with your hands, the clothes will be subjected to the force of the hand and the dust on the clothes will be elastic, and the dust and the clothes will be separated, and they will fall down due to the action of gravity.

But not all dust will fly away, there is a considerable amount of dust attached to the fibers and is tightly attracted by the plush on the clothes, so it can't be ejected; There is also a part of the greasy sticky on the clothes, which is very sticky and has to be hydrolyzed, so the clothes must be washed.

The dust is originally stationary on the clothes, and when the clothes are suddenly patted, the clothes vibrate, and the dust will fall because the inertia continues to remain stationary and stay in place.

Quite simply, it's the principle of relative statism.

When you photograph the clothes, the clothes leave the original position, and the dust on the clothes is still in the original position, so what you see is the dust flying away from the clothes.

Maybe there is something wrong in the question, right?

1) The dust that is slapped by the hand is lost, because the dust and the clothes are affected by the force, and the dust changes from (stationary) to (moving) after the clothes stop, and the dust leaves the clothes due to inertia (continuous movement).

2) Dust on the clothes that has not been patted by the hands will also be patted off, because the clothes have received the action of force, from (stationary) to (moving), and the dust leaves the clothes due to inertia (remaining stationary).

Holding dusty clothes in one hand, and gently patting them with the first finch with the other hand, the clothes change from stationary to moving due to the force of the hand, and the dust on the clothes should remain in the original static state due to inertia, and the dust and clothes will be separated, and they will fall down due to the action of gravity Therefore, the most reasonable order of these four sentences is

Therefore, choose D

Holding dusty clothes in one hand, and gently patting the shape with the other Bu Shisui hand, the clothes change from stationary to moving due to the force of the hand, and the dust on the clothes due to inertia to maintain the static state of the original skin, the dust and the clothes will be separated, and the action of gravity will fall down Therefore, the most reasonable order of these four sentences is So choose D