How to distinguish between kinetic energy and potential energy Help

Mechanical energy includes kinetic energy and potential energy.

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Kinetic energy: The energy that an object has due to its motion is called kinetic energy.

The mass and velocity of an object determine the magnitude of its kinetic energy, and the greater the mass and velocity of the moving object, the greater the kinetic energy. And all moving objects have kinetic energy.

Potential energy: Potential energy is further divided into gravitational potential energy and elastic potential energy.

The object is lifted as a result.

And the potential energy possessed is called gravitational potential energy.

Gravitational potential energy refers to the energy that an object has due to being lifted, and all objects that are lifted up are capable of doing work and all have gravitational potential energy. The greater the mass of the object and the higher it is lifted, the greater its gravitational potential energy.

Elastic potential energy refers to the energy possessed by an object due to elastic deformation, and all objects that undergo elastic deformation are able to do work and have elastic potential energy.

The greater the elastic deformation of an object that undergoes elastic deformation, the greater the elastic deformation it has.

To put it simply:

Kinetic energy is the amount of energy that an object has when it moves.

Potential energy is to lift the object high, and it has gravitational potential energy.

If the object bounces up after hitting the ground, it is elastic potential energy.

To judge potential energy, you have to think about whether the object has a tendency to move, such as a quilt placed on a table, it has a tendency to fall downward, so there is potential energy.

Kinetic energy is the energy that an object has when it moves, and potential energy refers to the energy that an object has when it is raised or lifted.

Kinetic energy is macro.

The object is moving, so it has kinetic energy.

Potential energy is microscopic.

The condition of the movement of molecules.

Because there is a gravitational pull between the molecules.

The greater the change in the distance between the molecules, the change in gravitational force.

It's not very difficult.

Kinetic energy: The energy that an object has due to its motion, known as the kinetic energy of the object. Its size is defined as one-half of the product of the mass of the object and the square of the velocity.

Potential energy: Potential energy is the energy that belongs to the common energy of the system of things, and it is usually said that the potential energy of an object is actually a shorthand statement. Potential energy is a relative quantity. Choose different potential energy zeros, and the value of potential energy is generally different.

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Conversion of kinetic and potential energy.

1. A moving object can do work, and the energy it has due to motion is called kinetic energy; The greater the velocity of the object, the greater the mass of the object, and the greater the kinetic energy of the object.

2. Transformation of kinetic energy and potential energy.

1) Kinetic energy and gravitational potential energy can be converted into each other.

2) Kinetic energy and elastic potential energy can be converted into each other.

3) Gravitational potential energy and elastic potential energy can be converted into each other.

Differences: 1. Kinetic energy is the energy possessed by the motion of an object, which is related to mass, the greater the mass, the greater the kinetic energy; It is also related to velocity, the greater the velocity, the greater the kinetic energy. Everything that moves has kinetic energy.

2. Potential energy is the energy that an object has because it is lifted. It is related to the mass, the greater the mass, the greater the potential energy; It is also related to the height, the greater the height, the greater the potential energy. The potential energy that everything that is lifted up.

Refer to the Encyclopedia of Caution and Foolishness - Kinetic Energy.

Encyclopedia - Potential energy.

1 What is potential energy.

1. Definition: Potential energy is the energy stored in a system, which can also be released or converted into other forms of energy. Potential energy is a state quantity, also known as potential energy. Potential energy is not possessed by individual objects but is shared by interacting objects.

2. Category: Potential energy can be divided into gravitational potential energy, elastic potential energy, electric potential energy and nuclear potential energy according to the different properties of the action. In mechanics, potential energy is gravitational potential energy and elastic potential energy.

1) Gravitational potential energy: It is the energy possessed by the object due to the action of gravity, and the formula is ep=mgh (m mass, g should be taken, h the height of the object according to the horizontal plane).

2) Elastic potential energy: It is the energy that an object has due to elastic deformation. The formula is ep=1 2 kx 2.

1 What is kinetic energy.

1. Definition: The energy possessed by an object due to its motion is called the kinetic energy of the object. Its size is defined as one-half of the product of the mass of the object and the square of the velocity, the expression: ek=mv2 2.

2. Conclusion: The greater the velocity of an object with the same mass, the greater its kinetic energy; The greater the mass of an object moving at the same velocity, the greater the kinetic energy it has.

1 What is the difference between potential energy and kinetic energy.

Kinetic energy is a kind of mechanical energy generated by an object because it has velocity, and the calculation method is to multiply the mass by the velocity squared and then multiply by 1 2, potential energy is a kind of mechanical energy that the object has because it is in a higher potential, such as the gravitational potential energy of the orange, electric potential energy, etc., in which the potential reaction is the displacement of it in a certain field with a certain zero potential position, the more the displacement, the greater the absolute value of the potential.

Potential energy can also be the elastic potential energy of an object due to elastic deformation, and it is also a kind of mechanical energy, such as the elastic potential energy after the spring is compressed or elongated, and there is a tendency to return to the equilibrium position.

Kinetic energy and potential energy are collectively referred to as mechanical energy. When only gravity does the work or the elastic force in the system does the work, the sum of kinetic energy and potential energy is certain, that is, the mechanical energy is conserved. But in other cases, mechanical energy is not conserved, and that is not true.

To give a few examples, if a train stops at a platform, it has no kinetic energy relative to the ground because the velocity is 0, and the plane in the sky has kinetic energy because it has velocity. When a box is moved from the first floor to the fifth floor, it is higher than the original first floor, so it has gravitational potential energy relative to the first floor, and its gravitational potential energy is the work of people carrying it to overcome gravity, that is, the chemical energy of people is converted. When a spring is pulled apart or compressed, the spring has elastic potential energy as it leaves the equilibrium position, and so on.