The final audit ties gamma, time, length, momentum, and energy into one checked chain. Exact arithmetic here means exact results for the stated model inputs; measured inputs still carry uncertainty and significant-figure limits.
highlighted = computed this step
The audit cites one gamma source
Gamma 5/4, lab time 5 s, moving length 4 m, and momentum 15 kg m/s come from typed sources.
γ=45Δt=5L=4p=15
The relativity audit closes the chain
Total energy 125 J and accepted bit 1 close the checked chain.