Lag1989 problem number 6.27

Lag1989 problem number 6.27

The accelerator reported the radioactive nucleus the speed V₁ = 0.4c. At the time of departure from the accelerator, the nucleus threw out in the direction of its motion a beta particle with a velocity of V₂ = 0.75c relative to the accelerator. Find the velocity of the particle relative to the nucleus.

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