What are the pros and cons of inertia in real life?

If the car does not have inertia while driving, the car will be in a state of high throttle for a long time. This costs fuel, and thanks to inertia, the car can coast long distances without the throttle while driving. Energy savings.

The car needs to brake if it encounters a situation while driving. At this time, there is no inertia. The car can not stop immediately due to inertia, which can make the car slide forward for a while after braking, and it is possible to hit objects on the road on this sliding road.

At this time, there is a "disadvantage" of inertia. Take buses, for example, they have all made buses.

Pros: For example, when the car is about to enter the station or encounters a red light in front of it, some drivers will turn off the engine and let the car slide by itself, which is actually the use of inertia to save energy, and to put it bluntly, it is fuel saving.

Disadvantages: When the bus encounters emergency braking, the passengers in the bus will rush forward due to inertia, which is prone to danger.

Use inertia: 1. The hammer head is loose, and the hammer handle is hit a few times on the ground, and the hammer head continues to move downward due to inertia to maintain the original motion state, so that the hammer head is tightly sleeved on the hammer handle, and the inertia is utilized;

2. When the clothes are beaten, the clothes are moved by force, and the dust on the clothes remains stationary due to inertia, so that the dust falls off the clothes and uses inertia;

3. When adding coal to the boiler, the shovel suddenly stops moving, and the coal continues to move due to inertia, and the coal enters the stove along the direction of the shovel's movement, using the inertia;

4. When the Chang'e-3 lunar exploration spacecraft is launched, there is a long distance after launch that does not need to consume fuel, but relies on inertial flight.

Inertia has disadvantages: 1. When the car brakes, the lower body of the person stops moving with the car, and the upper body needs to maintain the original motion state due to inertia and continue to move forward, so that the person falls forward, which is easy to cause injury, and the inertia has disadvantages in this phenomenon;

2. High-speed vehicles, after braking, due to inertia, the vehicle moves forward for a distance and does not stop immediately, if there are vehicles or pedestrians in front, it is prone to accidents.

Material 1; Inertia makes a moving car more dangerous to an accident.

Everyday life makes use of inertia:

1. In various ball sports, the inertia of the ball is used to achieve passing.

2. The pistol fires bullets.

3. After washing your hands, shake your hands vigorously to make the water droplets fall off, which is to use the inertia of the water droplets. Noisy.

4. Pat the quilt with a stick, use the inertia of dust, and talk about dust shooting.

5. In the train, the workers who shovel coal into the locomotive can directly throw the coal into the locomotive without putting the coal into the combustion chamber by using the inertia of the coal.

Hazards: 1. When the car brakes, due to inertia, it slides forward for a certain distance, causing a traffic accident.

2. When the car brakes, due to the inertia of people, the people in the bus will fall forward.

3. When a person is running fast, his foot is tripped by a branch, etc., and he falls.

Inertia, or the force inherent in matter, is a resistant, which exists in every object, comparable in magnitude to that object, and which is kept as far as possible in its present state, whether at rest or in a uniform linear motion.

An object that is not subjected to any external force (or the net force is 0) will remain at rest or move in a straight line at a uniform speed. Generally, it refers to the property that the object retains its original state of motion when it is not acted on by external forces. The phenomenon of inertia is a phenomenon in which an object retains its original state of motion.

In physics, inertia is the property of an object to resist a change in its state of motion. The inertia of an object can be measured in terms of its mass, and the greater the mass, the greater the inertia. Isaac Newton defined inertia in his magnum opus, Principles of Mathematics in Natural Philosophy:

Inertia, or the force inherent in matter, is a resistant, which exists in every object, comparable in magnitude to that object, and which is kept as far as possible in its present state, whether at rest or in a uniform linear motion.

More specifically, Newton's first law states that there are certain frames of reference in which objects that are not subject to external forces all remain at rest or move in a uniform straight line. That is, from some frames of reference, if the resultant force exerted on the object is zero, the magnitude and direction of the object's velocity are constant. Inertia is defined as the property of an object in Newton's first law that retains its original state of motion.

A frame of reference that satisfies Newton's first law is called an inertial frame of reference. More detail on inertial frames of reference will be given later.

The principle of inertia is the fundamental principle of classical mechanics. Many scholars believe that the principle of inertia is Newton's first law. Following this principle, the object will continue to move at its existing speed, unless an external force forces it to change its velocity.

On the Earth's surface, inertia is often masked by friction, air resistance, and other effects, causing objects to move more and more slowly (often ending up at rest). This phenomenon misled many ancient scholars, for example, Aristotle believed that in the universe, all objects have their "natural positions", in perfect states, that objects are fixed in their natural positions, and that objects only move when an external force is applied.

Inertia is an intrinsic property of all objects, whether solid, liquid, or gas, whether the object is in motion or at rest. Everything has inertia.

When you kick the ball, the ball starts moving, and because the ball has its own inertia, it will keep rolling until it is stopped by an external force. Any object has inertia at all times, and it has to maintain its original state of motion. Definition of inertia:

We call the property of an object that remains in constant motion inertia. Inertia represents how easy it is for an object to change its state of motion. The magnitude of inertia is only related to the mass of the object.

It is relatively difficult to change the motion state of an object with a large mass, that is, it has a large inertia; The motion state of an object with a small mass is relatively easy to change, that is, the inertia is small.

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Pros: Reduce unnecessary consumption.

Cons: Increases unnecessary danger.

Pros: The bike can run.

Disadvantages: It is troublesome to not be able to brake the car.

Inertia can make people get used to a certain state without changing it. If you don't change, you often can't make a breakthrough. Profit is stability.

Pros: Reduces unnecessary consumption Cons: Increases unnecessary dangers.

According to these two examples, 600 words is not much.

Don't be too lazy.

Let's go and go into detail about this, it's not good to reply in just a few words.