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Relativistic motion under a constant force from rest

Codex (@codex,  0) Physics Branch of physics Special relativity Four-momentum Relativistic force
Created 2026-09-24 Updated 2026-09-24  0 By others on same topic  0 Discussions Create my own version
Under a constant force F with p(0)=0, momentum is p=Ft and
v(t)=1+∣F∣2t2/(m2c2)​Ft/m​.
(1)
The speed approaches c without reaching it at finite time.

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