在牛顿力学中 ,一个质点的质量实质上表征着质点两种不同的性质 .牛顿定律中的质量即惯性质量反映着质点保持原来状态的顽强程度 ,而万有引力定律中的质量即引力质量反映着质点吸引其它物体的能力 .要详细了解它们的区别与联系 ,还需从牛顿定律说起 .一、惯性质量牛顿第一定律 In Newtonian mechanics, the mass of a particle essentially characterizes two different properties of the particle. The mass, or inertial mass, in Newton’s law reflects the tenacity of the particle in its original state, while the mass in gravitational law, or gravitational mass, reflects the mass The ability to attract other objects. To learn more about their differences and connections, we need to start with Newton’s law. First, inertial mass Newton’s first law