A new equation for a mass and its speed.

This work provides that, when an object is accelerated, the substance quantity included in the object should remain a constant with that substance being redistributed within the object. For the same object, a different mass distribution will show a different momentum effect causing the measured mass to change. Based on this viewpoint, a new mass-speed equation is derived. Analysis shows that the new equation is more compatible with the experimental data than special relativity. [ABSTRACT FROM AUTHOR]