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kinetic energy, form of energy that an object or a particle has by reason of its motion. If work, which transfers energy, is done on an object by applying a net force, the object speeds up and thereby gains kinetic energy. Kinetic energy is a property of a moving object or particle and depends not only on its motion but also on its mass.
In physics, the kinetic energy of an object is the form of energy that it possesses due to its motion. [1] In classical mechanics, the kinetic energy of a non-rotating object of mass m traveling at a speed v is . [2] The kinetic energy of an object is equal to the work, force ( F) x displacement ( s ), needed to achieve its stated velocity.
Kinetic energy is the energy an object has because of its motion. If we want to accelerate an object, then we must apply a force. Applying a force requires us to do work. After work has been done, energy has been transferred to the object, and the object will be moving with a new constant speed.
Kinetic energy is a fundamental concept in physics that describes the energy transferred to an object due to its motion. In order to accelerate an object, force must be applied, which involves performing work. When work is done on an object, energy is transferred, resulting in the object moving with a new speed.
2024年4月15日 · 动能 （英语： Kinetic energy ）是物质运动时所得到的 能量 。 它通常被定义成使某物体从静止状态至运动状态所做的 功 。 由于运动是相对的，动能也是相对于某参照系而言。 同一物体在不同的参照系会有不同的 速率 ，也就是有不同的动能。 动能的国际单位是 焦耳 （J），以 基本单位 表示是千克米平方每秒平方（kg·m 2 ·s -2 ） [1] 。 一个物体的动能只有在速率改变时才会改变。 经典力学 [ 编辑] 在 经典力学 ，一个 质点 （一个很小的物体，它的大小基本可以忽略）或者一个没有自转的 刚体 的动能、 速率 与 质量 的关系是： 其中 代表动能， 代表 质量 ， 代表 速率 。 [1] 而当一个物体的质量不变，一个物体 平移 的动能、速率与质量的关系亦同上。
The units of kinetic energy are mass times the square of speed, or kg • m 2 /s 2. But the units of force are mass times acceleration, kg • m/s 2, so the units of kinetic energy are also the units of force times distance, which are the units of work, or joules.
2021年3月25日 · Kinetic energy is the energy an object has due to its motion. Examples of kinetic energy include walking, falling, flying, and throwing. Potential and kinetic energy are the two major types of energy. Here is a look at kinetic energy, including its definition, examples, units, formula, and how to calculate it.
Kinetic energy is the energy that any object with mass has simply because it is moving. If an object is not moving, it has no kinetic energy. An object’s kinetic energy is directly related to its mass. Imagine two objects moving at the same speed. If one object has twice the mass of the other, it will also have twice the kinetic energy.
The energy of motion is called kinetic energy. It can be computed using the equation K = ½mv² where m is mass and v is speed.
Kinetic Energy. Kinetic energy is energy of motion. The SI unit for energy is the joule = newton x meter in accordance with the basic definition of energy as the capacity for doing work. The kinetic energy of an object is the energy it possesses because of its motion. The kinetic energy* of a point mass m is given by.
