动量(mv)和动能(1/2mv~2)都是反映物体运动状态的物理量,又都取决于运动物体的质量和速度,但是这两个物理量有着本质的区别。一、动量和动能是分别反映运动物体两个不同本领的物理量动量只表达了机械运动传递的本领,它是描述物体机械运动状态的物理量。机械运动所传递的不是速度,而是物体的动量。对于给定的物体(质量不变),如 Momentum (mv) and kinetic energy (1 / 2mv ~ 2) are both physical quantities that reflect the movement of the object, and both depend on the mass and speed of the moving object, but the two physical quantities are essentially different. First, the momentum and kinetic energy are two different physical skills, respectively, reflecting the physical capacity of the object momentum only express the ability of mechanical movement, it is to describe the physical state of physical movement of objects. Mechanical motion is not the speed, but the momentum of the object. For a given object (the same quality), such as