Open Access Research Article

Mass Decreases with Velocity

Authors

Asutosh Kumar * Department of Physics, KSS College, Lakhisarai 811311, India. P.G. Department of Physics, Munger University, Munger 811201, India. Vaidic and Modern Physics Research Centre, Bhagal Bhim, Bhinmal, Jalore 343029, India.

https://doi.org/10.22105/kmisj.v3i1.109

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Abstract

We present a simple approach for deriving velocity-dependent masses using the principle of relativity. Our analysis reveals that the transformations associated with Galilean, Lorentz, and other space-time frameworks between two inertial reference frames are fundamentally equivalent in the context of the relativity of mass. Consequently, the notion of velocity-dependent mass is not the exclusive characteristic of Special Relativity (Lorentz transformation). Among the notable conclusions drawn from our formalism are: mass can both increase and decrease with velocity, a particle can never be completely at rest, and superluminal signaling is in principle feasible. Furthermore, we discuss on the nature of mass and argue that a photon is not massless.

Keywords

Relativity of mass Velocity-dependent mass Mass can decrease with velocity Superluminal signaling Photon mass Rest mass vs intrinsic mass

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Published 2026-06-17
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Kumar, A. (2026). Mass Decreases with Velocity. Karshi Multidisciplinary International Scientific Journal, 3(1), 1-12. https://doi.org/10.22105/kmisj.v3i1.109

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