质量与速度关系式的另一推证方法

Another Derivation Method of Relational Expression of Mass and Velocity

设惯性系S′相对于S系运动.S′系中一个静止的粒子分裂为两个粒子(质量相等、速度反向),在S系中观测它们的质量和速度.利用动量守恒定律和洛仑兹速度变换的逆变换式,导出质量与速度的关系式.

Suppose the inertial system S′ relative to S the motion.In the one static particle splits into two particles（equal mass,oppositely directed velocity）.Their mass and velocity are observed in the S.The momentum conservation law with the contra variant forms of Lorenz velocity transformation are utilized to derive the relational expression of the mass and velocity.